Remove unused imports.

Author: xiongmao86

CONTRIBUTING.md

@@ -110,7 +110,7 @@ It's worth noting that the majority of `clippy_lints/src/lib.rs` is autogenerate
 ```rust
 // ./clippy_lints/src/else_if_without_else.rs
 
-use rustc::lint::{EarlyLintPass, LintArray, LintPass};
+use rustc::lint::EarlyLintPass;
 
 // ...
 

clippy_lints/src/approx_const.rs

@@ -1,7 +1,7 @@
 use crate::utils::span_lint;
-use rustc_session::declare_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 use rustc_span::symbol;
 use std::f64::consts as f64;

clippy_lints/src/arithmetic.rs

@@ -1,9 +1,9 @@
 use crate::consts::constant_simple;
 use crate::utils::span_lint;
-use rustc_session::impl_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc_hir as hir;
 use rustc_session::declare_tool_lint;
+use rustc_session::impl_lint_pass;
 use rustc_span::source_map::Span;
 
 declare_clippy_lint! {

clippy_lints/src/as_conversions.rs

@@ -1,5 +1,5 @@
+use rustc::lint::{in_external_macro, EarlyContext, EarlyLintPass, LintContext};
 use rustc_session::declare_lint_pass;
-use rustc::lint::{in_external_macro, EarlyContext, EarlyLintPass, LintArray, LintContext, LintPass};
 use rustc_session::declare_tool_lint;
 use syntax::ast::*;
 

clippy_lints/src/assertions_on_constants.rs

@@ -2,9 +2,9 @@ use crate::consts::{constant, Constant};
 use crate::utils::paths;
 use crate::utils::{is_direct_expn_of, is_expn_of, match_function_call, snippet_opt, span_help_and_lint};
 use if_chain::if_chain;
-use rustc_session::declare_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 use syntax::ast::LitKind;
 

clippy_lints/src/assign_ops.rs

@@ -3,12 +3,12 @@ use crate::utils::{
 };
 use crate::utils::{higher, sugg};
 use if_chain::if_chain;
-use rustc_session::declare_lint_pass;
 use rustc::hir::map::Map;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc_errors::Applicability;
 use rustc_hir as hir;
 use rustc_hir::intravisit::{walk_expr, NestedVisitorMap, Visitor};
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/atomic_ordering.rs

@@ -1,10 +1,10 @@
 use crate::utils::{match_def_path, span_help_and_lint};
 use if_chain::if_chain;
-use rustc_session::declare_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc::ty;
 use rustc_hir::def_id::DefId;
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/attrs.rs

@@ -6,14 +6,13 @@ use crate::utils::{
     span_lint_and_then, without_block_comments,
 };
 use if_chain::if_chain;
-use rustc_session::declare_lint_pass;
 use rustc::lint::{
-    in_external_macro, CheckLintNameResult, EarlyContext, EarlyLintPass, LateContext, LateLintPass, LintArray,
-    LintContext, LintPass,
+    in_external_macro, CheckLintNameResult, EarlyContext, EarlyLintPass, LateContext, LateLintPass, LintContext,
 };
 use rustc::ty;
 use rustc_errors::Applicability;
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use rustc_span::symbol::Symbol;

clippy_lints/src/bit_mask.rs

@@ -2,11 +2,11 @@ use crate::consts::{constant, Constant};
 use crate::utils::sugg::Sugg;
 use crate::utils::{span_lint, span_lint_and_then};
 use if_chain::if_chain;
-use rustc_session::impl_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc_errors::Applicability;
 use rustc_hir::*;
 use rustc_session::declare_tool_lint;
+use rustc_session::impl_lint_pass;
 use rustc_span::source_map::Span;
 use syntax::ast::LitKind;
 

clippy_lints/src/blacklisted_name.rs

@@ -1,9 +1,9 @@
 use crate::utils::span_lint;
-use rustc_session::impl_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc_data_structures::fx::FxHashSet;
 use rustc_hir::*;
 use rustc_session::declare_tool_lint;
+use rustc_session::impl_lint_pass;
 
 declare_clippy_lint! {
     /// **What it does:** Checks for usage of blacklisted names for variables, such

clippy_lints/src/block_in_if_condition.rs

@@ -1,10 +1,10 @@
 use crate::utils::*;
 use matches::matches;
-use rustc_session::declare_lint_pass;
 use rustc::hir::map::Map;
-use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintContext, LintPass};
+use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintContext};
 use rustc_hir::intravisit::{walk_expr, NestedVisitorMap, Visitor};
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/booleans.rs

@@ -3,13 +3,13 @@ use crate::utils::{
     span_lint_and_then, SpanlessEq,
 };
 use if_chain::if_chain;
-use rustc_session::declare_lint_pass;
 use rustc::hir::map::Map;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc_errors::Applicability;
 use rustc_hir::intravisit;
 use rustc_hir::intravisit::*;
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use syntax::ast::LitKind;

clippy_lints/src/bytecount.rs

@@ -3,11 +3,11 @@ use crate::utils::{
     span_lint_and_sugg, walk_ptrs_ty,
 };
 use if_chain::if_chain;
-use rustc_session::declare_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc::ty;
 use rustc_errors::Applicability;
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 use syntax::ast::{Name, UintTy};
 

clippy_lints/src/cargo_common_metadata.rs

@@ -3,8 +3,8 @@
 use std::path::PathBuf;
 
 use crate::utils::span_lint;
+use rustc::lint::{EarlyContext, EarlyLintPass};
 use rustc_session::declare_lint_pass;
-use rustc::lint::{EarlyContext, EarlyLintPass, LintArray, LintPass};
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::DUMMY_SP;
 use syntax::ast::*;

clippy_lints/src/checked_conversions.rs

@@ -1,10 +1,10 @@
 //! lint on manually implemented checked conversions that could be transformed into `try_from`
 
 use if_chain::if_chain;
-use rustc_session::declare_lint_pass;
-use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintContext, LintPass};
+use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintContext};
 use rustc_errors::Applicability;
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 use syntax::ast::LitKind;
 

clippy_lints/src/cognitive_complexity.rs

@@ -1,11 +1,11 @@
 //! calculate cognitive complexity and warn about overly complex functions
 
 use rustc::hir::map::Map;
-use rustc_session::impl_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintContext, LintPass};
+use rustc::lint::{LateContext, LateLintPass, LintContext};
 use rustc_hir::intravisit::{walk_expr, FnKind, NestedVisitorMap, Visitor};
 use rustc_hir::*;
 use rustc_session::declare_tool_lint;
+use rustc_session::impl_lint_pass;
 use rustc_span::source_map::Span;
 use rustc_span::BytePos;
 use syntax::ast::Attribute;

clippy_lints/src/collapsible_if.rs

@@ -13,8 +13,8 @@
 //! This lint is **warn** by default
 
 use if_chain::if_chain;
+use rustc::lint::{EarlyContext, EarlyLintPass};
 use rustc_session::declare_lint_pass;
-use rustc::lint::{EarlyContext, EarlyLintPass, LintArray, LintPass};
 use rustc_session::declare_tool_lint;
 use syntax::ast;
 

clippy_lints/src/comparison_chain.rs

@@ -1,9 +1,9 @@
 use crate::utils::{
     get_trait_def_id, if_sequence, implements_trait, parent_node_is_if_expr, paths, span_help_and_lint, SpanlessEq,
 };
-use rustc_session::declare_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/copies.rs

@@ -1,10 +1,10 @@
 use crate::utils::{get_parent_expr, higher, if_sequence, same_tys, snippet, span_lint_and_then, span_note_and_lint};
 use crate::utils::{SpanlessEq, SpanlessHash};
-use rustc_session::declare_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc::ty::Ty;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 use rustc_span::symbol::Symbol;
 use std::collections::hash_map::Entry;

clippy_lints/src/copy_iterator.rs

@@ -1,7 +1,7 @@
 use crate::utils::{is_copy, match_path, paths, span_note_and_lint};
-use rustc_session::declare_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc_hir::{Item, ItemKind};
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/dbg_macro.rs

@@ -1,7 +1,7 @@
 use crate::utils::{snippet_opt, span_help_and_lint, span_lint_and_sugg};
-use rustc_session::declare_lint_pass;
-use rustc::lint::{EarlyContext, EarlyLintPass, LintArray, LintPass};
+use rustc::lint::{EarlyContext, EarlyLintPass};
 use rustc_errors::Applicability;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 use syntax::ast;

clippy_lints/src/default_trait_access.rs

@@ -1,9 +1,9 @@
 use if_chain::if_chain;
-use rustc_session::declare_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc::ty;
 use rustc_errors::Applicability;
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 
 use crate::utils::{any_parent_is_automatically_derived, match_def_path, paths, span_lint_and_sugg};

clippy_lints/src/derive.rs

@@ -1,10 +1,10 @@
 use crate::utils::paths;
 use crate::utils::{is_automatically_derived, is_copy, match_path, span_lint_and_then};
 use if_chain::if_chain;
-use rustc_session::declare_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc::ty::{self, Ty};
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 

clippy_lints/src/doc.rs

@@ -1,10 +1,10 @@
 use crate::utils::{match_type, paths, return_ty, span_lint};
 use itertools::Itertools;
-use rustc_session::impl_lint_pass;
-use rustc::lint::{in_external_macro, LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{in_external_macro, LateContext, LateLintPass};
 use rustc_data_structures::fx::FxHashSet;
 use rustc_hir as hir;
 use rustc_session::declare_tool_lint;
+use rustc_session::impl_lint_pass;
 use rustc_span::source_map::{BytePos, MultiSpan, Span};
 use rustc_span::Pos;
 use std::ops::Range;

clippy_lints/src/double_comparison.rs

@@ -1,9 +1,9 @@
 //! Lint on unnecessary double comparisons. Some examples:
 
-use rustc_session::declare_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc_errors::Applicability;
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 

clippy_lints/src/double_parens.rs

@@ -1,6 +1,6 @@
 use crate::utils::span_lint;
+use rustc::lint::{EarlyContext, EarlyLintPass};
 use rustc_session::declare_lint_pass;
-use rustc::lint::{EarlyContext, EarlyLintPass, LintArray, LintPass};
 use rustc_session::declare_tool_lint;
 use syntax::ast::*;
 

clippy_lints/src/drop_bounds.rs

@@ -1,8 +1,8 @@
 use crate::utils::{match_def_path, paths, span_lint};
 use if_chain::if_chain;
-use rustc_session::declare_lint_pass;
-use rustc::lint::{LateLintPass, LintArray, LintPass};
+use rustc::lint::LateLintPass;
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/drop_forget_ref.rs

@@ -1,9 +1,9 @@
 use crate::utils::{is_copy, match_def_path, paths, qpath_res, span_note_and_lint};
 use if_chain::if_chain;
-use rustc_session::declare_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc::ty;
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/duration_subsec.rs

@@ -1,8 +1,8 @@
 use if_chain::if_chain;
-use rustc_session::declare_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc_errors::Applicability;
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Spanned;
 

clippy_lints/src/else_if_without_else.rs

@@ -1,7 +1,7 @@
 //! Lint on if expressions with an else if, but without a final else branch.
 
+use rustc::lint::{in_external_macro, EarlyContext, EarlyLintPass, LintContext};
 use rustc_session::declare_lint_pass;
-use rustc::lint::{in_external_macro, EarlyContext, EarlyLintPass, LintArray, LintContext, LintPass};
 use rustc_session::declare_tool_lint;
 use syntax::ast::*;
 

clippy_lints/src/empty_enum.rs

@@ -1,9 +1,9 @@
 //! lint when there is an enum with no variants
 
 use crate::utils::span_lint_and_then;
-use rustc_session::declare_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 
 declare_clippy_lint! {

clippy_lints/src/entry.rs

@@ -2,12 +2,12 @@ use crate::utils::SpanlessEq;
 use crate::utils::{get_item_name, higher, match_type, paths, snippet, snippet_opt};
 use crate::utils::{snippet_with_applicability, span_lint_and_then, walk_ptrs_ty};
 use if_chain::if_chain;
-use rustc_session::declare_lint_pass;
 use rustc::hir::map::Map;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc_errors::Applicability;
 use rustc_hir::intravisit::{walk_expr, NestedVisitorMap, Visitor};
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 use rustc_span::source_map::Span;
 

clippy_lints/src/enum_clike.rs

@@ -3,11 +3,11 @@
 
 use crate::consts::{miri_to_const, Constant};
 use crate::utils::span_lint;
-use rustc_session::declare_lint_pass;
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::lint::{LateContext, LateLintPass};
 use rustc::ty;
 use rustc::ty::util::IntTypeExt;
 use rustc_hir::*;
+use rustc_session::declare_lint_pass;
 use rustc_session::declare_tool_lint;
 use std::convert::TryFrom;
 use syntax::ast::{IntTy, UintTy};