Remove unused or unneeded stuff from java_core.dart.

pkg/analyzer/lib/src/generated/utilities_collection.dart

 // Copyright (c) 2014, 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 analyzer.src.generated.utilities_collection;
 
 import 'dart:collection';
 import "dart:math" as math;
 
 import 'package:analyzer/src/generated/java_core.dart';
 import 'package:analyzer/src/generated/scanner.dart' show Token;
 
 /**
+ * Returns `true` if a and b contain equal elements in the same order.
+ */
+bool listsEqual(List a, List b) {
+  // TODO(rnystrom): package:collection also implements this, and analyzer
+  // already transitively depends on that package. Consider using it instead.
+  if (identical(a, b)) {
+    return true;
+  }
+
+  if (a.length != b.length) {
+    return false;
+  }
+
+  for (int i = 0; i < a.length; i++) {
+    if (a[i] != b[i]) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+/**
  * The class `BooleanArray` defines methods for operating on integers as if they were arrays
  * of booleans. These arrays can be indexed by either integers or by enumeration constants.
  */
 class BooleanArray {
   /**
    * Return the value of the element at the given index.
    *
    * @param array the array being accessed
    * @param index the index of the element being accessed
    * @return the value of the element at the given index
@@ skipping 691 matching lines @@
   /**
    * Map the key to the value.
    *
    * @param key the token being mapped to the value
    * @param value the token to which the key will be mapped
    */
   void put(Token key, Token value) {
     _map[key] = value;
   }
 }