(Re)move methods from internal.Lists that are not used, or only used once.

sdk/lib/internal/internal.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart._internal;
 
 import 'dart:collection';
 
 import 'dart:core' hide Symbol;
 import 'dart:core' as core;
 import 'dart:math' show Random;
 
 part 'iterable.dart';
 part 'list.dart';
-part 'lists.dart';
 part 'print.dart';
 part 'sort.dart';
 part 'symbol.dart';
 
 // Powers of 10 up to 10^22 are representable as doubles.
 // Powers of 10 above that are only approximate due to lack of precission.
 // Used by double-parsing.
 const POWERS_OF_TEN = const [
                         1.0,  /*  0 */
                        10.0,
@@ skipping 36 matching lines @@
 }
 
 /// Marks a function as an external implementation ("native" in the Dart VM).
 ///
 /// Provides a backend-specific String that can be used to identify the
 /// function's implementation.
 class ExternalName {
   final String name;
   const ExternalName(this.name);
 }