Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_SVGAnimatedNumberListWrappingImplementation.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 _SVGAnimatedNumberListWrappingImplementation extends DOMWrapperBase implements SVGAnimatedNumberList {
-  _SVGAnimatedNumberListWrappingImplementation() : super() {}
-
-  static create__SVGAnimatedNumberListWrappingImplementation() native {
-    return new _SVGAnimatedNumberListWrappingImplementation();
-  }
-
-  SVGNumberList get animVal() { return _get_animVal(this); }
-  static SVGNumberList _get_animVal(var _this) native;
-
-  SVGNumberList get baseVal() { return _get_baseVal(this); }
-  static SVGNumberList _get_baseVal(var _this) native;
-
-  String get typeName() { return "SVGAnimatedNumberList"; }
-}