Remove useless comments from HIR::MethodCallExpr

Author: philberty

gcc/rust/hir/tree/rust-hir-expr.h

@@ -1635,18 +1635,13 @@ class MethodCallExpr : public ExprWithoutBlock
 {
   std::unique_ptr<Expr> receiver;
   PathExprSegment method_name;
-  // inlined form of CallParams
   std::vector<std::unique_ptr<Expr> > params;
 
   Location locus;
 
 public:
   std::string as_string () const override;
 
-  /*inline std::vector<std::unique_ptr<Expr>> get_params() const {
-      return params;
-  }*/
-
   MethodCallExpr (Analysis::NodeMapping mappings,
 		  std::unique_ptr<Expr> call_receiver,
 		  PathExprSegment method_path,