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

pkg/analyzer/test/generated/java_core_test.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.java_core_test;
 
 import 'package:analyzer/src/generated/java_core.dart';
 import 'package:unittest/unittest.dart';
 
 import '../utils.dart';
 
 main() {
   initializeTestEnvironment();
   group('Character', () {
@@ skipping 131 matching lines @@
       expect(Character.isWhitespace('.'.codeUnitAt(0)), isFalse);
       expect(Character.isWhitespace('0'.codeUnitAt(0)), isFalse);
       expect(Character.isWhitespace('9'.codeUnitAt(0)), isFalse);
       expect(Character.isWhitespace('a'.codeUnitAt(0)), isFalse);
       expect(Character.isWhitespace('z'.codeUnitAt(0)), isFalse);
       expect(Character.isWhitespace('A'.codeUnitAt(0)), isFalse);
       expect(Character.isWhitespace('Z'.codeUnitAt(0)), isFalse);
     });
   });
 }