Remove MutationEvent bad entries in both removed list and renamed list

sdk/lib/js/dartium/cached_patches.dart

 // START_OF_CACHED_PATCHES
 // Copyright (c) 2013, 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.
 
 // DO NOT EDIT GENERATED FILE.
 
 library cached_patches;
 
 var cached_patches = {"dart:html": ["dart:html", "dart:html_js_interop_patch.dart", """import 'dart:js' as js_library;
@@ skipping 3903 matching lines @@
 }
 patch class _HTMLMarqueeElement {
   static Type get instanceRuntimeType => _HTMLMarqueeElementImpl;
 
 }
 class _HTMLMarqueeElementImpl extends _HTMLMarqueeElement implements js_library.JSObjectInterfacesDom {
   _HTMLMarqueeElementImpl.internal_() : super.internal_();
   get runtimeType => _HTMLMarqueeElement;
   toString() => super.toString();
 }
-patch class _MutationEvent {
-  static Type get instanceRuntimeType => _MutationEventImpl;
-
-}
-class _MutationEventImpl extends _MutationEvent implements js_library.JSObjectInterfacesDom {
-  _MutationEventImpl.internal_() : super.internal_();
-  get runtimeType => _MutationEvent;
-  toString() => super.toString();
-}
 patch class _NamedNodeMap {
   static Type get instanceRuntimeType => _NamedNodeMapImpl;
 
 }
 class _NamedNodeMapImpl extends _NamedNodeMap implements js_library.JSObjectInterfacesDom {
   _NamedNodeMapImpl.internal_() : super.internal_();
   get runtimeType => _NamedNodeMap;
   toString() => super.toString();
 }
 patch class _PagePopupController {
@@ skipping 2080 matching lines @@
 
 }
 class WaveShaperNodeImpl extends WaveShaperNode implements js_library.JSObjectInterfacesDom {
   WaveShaperNodeImpl.internal_() : super.internal_();
   get runtimeType => WaveShaperNode;
   toString() => super.toString();
 }
 
 """],};
 // END_OF_CACHED_PATCHES