Remove generated directories with 100s of files.

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

Index: client/dom/generated/src/wrapping/_MediaErrorWrappingImplementation.dart
diff --git a/client/dom/generated/src/wrapping/_MediaErrorWrappingImplementation.dart b/client/dom/generated/src/wrapping/_MediaErrorWrappingImplementation.dart
deleted file mode 100644
index 877ffbdd5e730e844724f3d55677340ba9ff8223..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/wrapping/_MediaErrorWrappingImplementation.dart
+++ /dev/null
@@ -1,18 +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 _MediaErrorWrappingImplementation extends DOMWrapperBase implements MediaError {
-  _MediaErrorWrappingImplementation() : super() {}
-
-  static create__MediaErrorWrappingImplementation() native {
-    return new _MediaErrorWrappingImplementation();
-  }
-
-  int get code() { return _get_code(this); }
-  static int _get_code(var _this) native;
-
-  String get typeName() { return "MediaError"; }
-}