Remove generated directories with 100s of files.

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

Index: client/dom/generated/src/wrapping/_WebKitTransitionEventWrappingImplementation.dart
diff --git a/client/dom/generated/src/wrapping/_WebKitTransitionEventWrappingImplementation.dart b/client/dom/generated/src/wrapping/_WebKitTransitionEventWrappingImplementation.dart
deleted file mode 100644
index 1093d5d0bec8cce9a20d738288a3dd3f54cc2afc..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/wrapping/_WebKitTransitionEventWrappingImplementation.dart
+++ /dev/null
@@ -1,21 +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 _WebKitTransitionEventWrappingImplementation extends _EventWrappingImplementation implements WebKitTransitionEvent {
-  _WebKitTransitionEventWrappingImplementation() : super() {}
-
-  static create__WebKitTransitionEventWrappingImplementation() native {
-    return new _WebKitTransitionEventWrappingImplementation();
-  }
-
-  num get elapsedTime() { return _get_elapsedTime(this); }
-  static num _get_elapsedTime(var _this) native;
-
-  String get propertyName() { return _get_propertyName(this); }
-  static String _get_propertyName(var _this) native;
-
-  String get typeName() { return "WebKitTransitionEvent"; }
-}