Rollup merge of #23803 - richo:unused-braces, r=Manishearth

Pretty much what it says on the tin.

Author: Manishearth

src/liballoc/arc.rs

@@ -76,7 +76,7 @@ use core::prelude::*;
 use core::atomic;
 use core::atomic::Ordering::{Relaxed, Release, Acquire, SeqCst};
 use core::fmt;
-use core::cmp::{Ordering};
+use core::cmp::Ordering;
 use core::default::Default;
 use core::mem::{min_align_of, size_of};
 use core::mem;

src/libcollections/btree/map.rs

@@ -24,7 +24,7 @@ use core::default::Default;
 use core::fmt::Debug;
 use core::hash::{Hash, Hasher};
 use core::iter::{Map, FromIterator, IntoIterator};
-use core::ops::{Index};
+use core::ops::Index;
 use core::{iter, fmt, mem, usize};
 use Bound::{self, Included, Excluded, Unbounded};
 

src/libcollections/vec.rs

@@ -52,7 +52,7 @@ use core::prelude::*;
 use alloc::boxed::Box;
 use alloc::heap::{EMPTY, allocate, reallocate, deallocate};
 use core::cmp::max;
-use core::cmp::{Ordering};
+use core::cmp::Ordering;
 use core::default::Default;
 use core::fmt;
 use core::hash::{self, Hash};

src/libcore/option.rs

@@ -148,7 +148,7 @@ use self::Option::*;
 use clone::Clone;
 use cmp::{Eq, Ord};
 use default::Default;
-use iter::{ExactSizeIterator};
+use iter::ExactSizeIterator;
 use iter::{Iterator, IteratorExt, DoubleEndedIterator, FromIterator, IntoIterator};
 use mem;
 use ops::FnOnce;

src/librand/distributions/range.rs

@@ -12,7 +12,7 @@
 
 // this is surprisingly complicated to be both generic & correct
 
-use core::prelude::{PartialOrd};
+use core::prelude::PartialOrd;
 use core::num::Int;
 use core::num::wrapping::WrappingOps;
 

src/librustc/metadata/encoder.rs

@@ -22,7 +22,7 @@ use metadata::cstore;
 use metadata::decoder;
 use metadata::tyencode;
 use middle::def;
-use middle::ty::{lookup_item_type};
+use middle::ty::lookup_item_type;
 use middle::ty::{self, Ty};
 use middle::stability;
 use util::nodemap::{FnvHashMap, NodeMap, NodeSet};

src/librustc/metadata/loader.rs

@@ -212,7 +212,7 @@
 //! no means all of the necessary details. Take a look at the rest of
 //! metadata::loader or metadata::creader for all the juicy details!
 
-use back::archive::{METADATA_FILENAME};
+use back::archive::METADATA_FILENAME;
 use back::svh::Svh;
 use session::Session;
 use session::search_paths::PathKind;

src/librustc/middle/astencode.rs

@@ -50,7 +50,7 @@ use rbml::writer::Encoder;
 use rbml;
 use serialize;
 use serialize::{Decodable, Decoder, DecoderHelpers, Encodable};
-use serialize::{EncoderHelpers};
+use serialize::EncoderHelpers;
 
 #[cfg(test)] use std::io::Cursor;
 #[cfg(test)] use syntax::parse;

src/librustc/middle/check_match.rs

@@ -18,7 +18,7 @@ use middle::const_eval::{const_expr_to_pat, lookup_const_by_id};
 use middle::def::*;
 use middle::expr_use_visitor::{ConsumeMode, Delegate, ExprUseVisitor, Init};
 use middle::expr_use_visitor::{JustWrite, LoanCause, MutateMode};
-use middle::expr_use_visitor::{WriteAndRead};
+use middle::expr_use_visitor::WriteAndRead;
 use middle::expr_use_visitor as euv;
 use middle::mem_categorization::cmt;
 use middle::pat_util::*;

src/librustc/middle/infer/bivariate.rs

@@ -25,13 +25,13 @@
 //! In particular, it might be enough to say (A,B) are bivariant for
 //! all (A,B).
 
-use middle::ty::{BuiltinBounds};
+use middle::ty::BuiltinBounds;
 use middle::ty::{self, Ty};
 use middle::ty::TyVar;
 use middle::infer::combine::*;
-use middle::infer::{cres};
-use middle::infer::type_variable::{BiTo};
-use util::ppaux::{Repr};
+use middle::infer::cres;
+use middle::infer::type_variable::BiTo;
+use util::ppaux::Repr;
 
 pub struct Bivariate<'f, 'tcx: 'f> {
     fields: CombineFields<'f, 'tcx>