Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_XPathResultWrappingImplementation.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 _XPathResultWrappingImplementation extends DOMWrapperBase implements XPathResult {
-  _XPathResultWrappingImplementation() : super() {}
-
-  static create__XPathResultWrappingImplementation() native {
-    return new _XPathResultWrappingImplementation();
-  }
-
-  bool get booleanValue() { return _get_booleanValue(this); }
-  static bool _get_booleanValue(var _this) native;
-
-  bool get invalidIteratorState() { return _get_invalidIteratorState(this); }
-  static bool _get_invalidIteratorState(var _this) native;
-
-  num get numberValue() { return _get_numberValue(this); }
-  static num _get_numberValue(var _this) native;
-
-  int get resultType() { return _get_resultType(this); }
-  static int _get_resultType(var _this) native;
-
-  Node get singleNodeValue() { return _get_singleNodeValue(this); }
-  static Node _get_singleNodeValue(var _this) native;
-
-  int get snapshotLength() { return _get_snapshotLength(this); }
-  static int _get_snapshotLength(var _this) native;
-
-  String get stringValue() { return _get_stringValue(this); }
-  static String _get_stringValue(var _this) native;
-
-  Node iterateNext() {
-    return _iterateNext(this);
-  }
-  static Node _iterateNext(receiver) native;
-
-  Node snapshotItem(int index) {
-    return _snapshotItem(this, index);
-  }
-  static Node _snapshotItem(receiver, index) native;
-
-  String get typeName() { return "XPathResult"; }
-}