Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_WaveShaperNodeWrappingImplementation.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 _WaveShaperNodeWrappingImplementation extends _AudioNodeWrappingImplementation implements WaveShaperNode {
-  _WaveShaperNodeWrappingImplementation() : super() {}
-
-  static create__WaveShaperNodeWrappingImplementation() native {
-    return new _WaveShaperNodeWrappingImplementation();
-  }
-
-  Float32Array get curve() { return _get_curve(this); }
-  static Float32Array _get_curve(var _this) native;
-
-  void set curve(Float32Array value) { _set_curve(this, value); }
-  static void _set_curve(var _this, Float32Array value) native;
-
-  String get typeName() { return "WaveShaperNode"; }
-}