Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_CharacterDataWrappingImplementation.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 _CharacterDataWrappingImplementation extends _NodeWrappingImplementation implements CharacterData {
-  _CharacterDataWrappingImplementation() : super() {}
-
-  static create__CharacterDataWrappingImplementation() native {
-    return new _CharacterDataWrappingImplementation();
-  }
-
-  String get data() { return _get_data(this); }
-  static String _get_data(var _this) native;
-
-  void set data(String value) { _set_data(this, value); }
-  static void _set_data(var _this, String value) native;
-
-  int get length() { return _get_length(this); }
-  static int _get_length(var _this) native;
-
-  void appendData(String data) {
-    _appendData(this, data);
-    return;
-  }
-  static void _appendData(receiver, data) native;
-
-  void deleteData(int offset, int length) {
-    _deleteData(this, offset, length);
-    return;
-  }
-  static void _deleteData(receiver, offset, length) native;
-
-  void insertData(int offset, String data) {
-    _insertData(this, offset, data);
-    return;
-  }
-  static void _insertData(receiver, offset, data) native;
-
-  void replaceData(int offset, int length, String data) {
-    _replaceData(this, offset, length, data);
-    return;
-  }
-  static void _replaceData(receiver, offset, length, data) native;
-
-  String substringData(int offset, int length) {
-    return _substringData(this, offset, length);
-  }
-  static String _substringData(receiver, offset, length) native;
-
-  String get typeName() { return "CharacterData"; }
-}