Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_ConvolverNodeWrappingImplementation.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 _ConvolverNodeWrappingImplementation extends _AudioNodeWrappingImplementation implements ConvolverNode {
-  _ConvolverNodeWrappingImplementation() : super() {}
-
-  static create__ConvolverNodeWrappingImplementation() native {
-    return new _ConvolverNodeWrappingImplementation();
-  }
-
-  AudioBuffer get buffer() { return _get_buffer(this); }
-  static AudioBuffer _get_buffer(var _this) native;
-
-  void set buffer(AudioBuffer value) { _set_buffer(this, value); }
-  static void _set_buffer(var _this, AudioBuffer value) native;
-
-  bool get normalize() { return _get_normalize(this); }
-  static bool _get_normalize(var _this) native;
-
-  void set normalize(bool value) { _set_normalize(this, value); }
-  static void _set_normalize(var _this, bool value) native;
-
-  String get typeName() { return "ConvolverNode"; }
-}