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

pkg/analyzer/test/generated/test_support.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.test_support;
 
 import 'dart:collection';
 
 import 'package:analyzer/src/generated/ast.dart' show AstNode, NodeLocator;
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/java_core.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
@@ skipping 625 matching lines @@
     if (other is TestSource) {
       return other.uri == uri;
     }
     return false;
   }
 
   Uri resolveRelativeUri(Uri uri) {
     return this.uri.resolveUri(uri);
   }
 }