Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_HighPass2FilterNodeWrappingImplementation.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 _HighPass2FilterNodeWrappingImplementation extends _AudioNodeWrappingImplementation implements HighPass2FilterNode {
-  _HighPass2FilterNodeWrappingImplementation() : super() {}
-
-  static create__HighPass2FilterNodeWrappingImplementation() native {
-    return new _HighPass2FilterNodeWrappingImplementation();
-  }
-
-  AudioParam get cutoff() { return _get_cutoff(this); }
-  static AudioParam _get_cutoff(var _this) native;
-
-  AudioParam get resonance() { return _get_resonance(this); }
-  static AudioParam _get_resonance(var _this) native;
-
-  String get typeName() { return "HighPass2FilterNode"; }
-}