Remove generated directories with 100s of files.

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

-// 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 _ElementTimeControlWrappingImplementation extends DOMWrapperBase implements ElementTimeControl {
-  _ElementTimeControlWrappingImplementation() : super() {}
-
-  static create__ElementTimeControlWrappingImplementation() native {
-    return new _ElementTimeControlWrappingImplementation();
-  }
-
-  void beginElement() {
-    _beginElement(this);
-    return;
-  }
-  static void _beginElement(receiver) native;
-
-  void beginElementAt(num offset) {
-    _beginElementAt(this, offset);
-    return;
-  }
-  static void _beginElementAt(receiver, offset) native;
-
-  void endElement() {
-    _endElement(this);
-    return;
-  }
-  static void _endElement(receiver) native;
-
-  void endElementAt(num offset) {
-    _endElementAt(this, offset);
-    return;
-  }
-  static void _endElementAt(receiver, offset) native;
-
-  String get typeName() { return "ElementTimeControl"; }
-}