Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_CSSMediaRuleWrappingImplementation.dart

Index: client/dom/generated/src/wrapping/_CSSMediaRuleWrappingImplementation.dart
diff --git a/client/dom/generated/src/wrapping/_CSSMediaRuleWrappingImplementation.dart b/client/dom/generated/src/wrapping/_CSSMediaRuleWrappingImplementation.dart
deleted file mode 100644
index b312739fcae3694aef67ea71bd2093d755a77080..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/wrapping/_CSSMediaRuleWrappingImplementation.dart
+++ /dev/null
@@ -1,32 +0,0 @@
-// Copyright (c) 2011, 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.
-
-// WARNING: Do not edit - generated code.
-
-class _CSSMediaRuleWrappingImplementation extends _CSSRuleWrappingImplementation implements CSSMediaRule {
-  _CSSMediaRuleWrappingImplementation() : super() {}
-
-  static create__CSSMediaRuleWrappingImplementation() native {
-    return new _CSSMediaRuleWrappingImplementation();
-  }
-
-  CSSRuleList get cssRules() { return _get_cssRules(this); }
-  static CSSRuleList _get_cssRules(var _this) native;
-
-  MediaList get media() { return _get_media(this); }
-  static MediaList _get_media(var _this) native;
-
-  void deleteRule(int index) {
-    _deleteRule(this, index);
-    return;
-  }
-  static void _deleteRule(receiver, index) native;
-
-  int insertRule(String rule, int index) {
-    return _insertRule(this, rule, index);
-  }
-  static int _insertRule(receiver, rule, index) native;
-
-  String get typeName() { return "CSSMediaRule"; }
-}