[analyzer] remove "auto-generated do not edit" comments

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.
 
-// This code was auto-generated, is not intended to be edited, and is subject to
-// significant change. Please see the README file for more information.
-
 library engine.utilities.collection;
 
 import "dart:math" as math;
 import 'dart:collection';
 
 import 'java_core.dart';
 import 'scanner.dart' show Token;
 
 /**
  * The class `BooleanArray` defines methods for operating on integers as if they were arrays
@@ skipping 719 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;
   }
 }