Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_SVGTestsWrappingImplementation.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 _SVGTestsWrappingImplementation extends DOMWrapperBase implements SVGTests {
-  _SVGTestsWrappingImplementation() : super() {}
-
-  static create__SVGTestsWrappingImplementation() native {
-    return new _SVGTestsWrappingImplementation();
-  }
-
-  SVGStringList get requiredExtensions() { return _get_requiredExtensions(this); }
-  static SVGStringList _get_requiredExtensions(var _this) native;
-
-  SVGStringList get requiredFeatures() { return _get_requiredFeatures(this); }
-  static SVGStringList _get_requiredFeatures(var _this) native;
-
-  SVGStringList get systemLanguage() { return _get_systemLanguage(this); }
-  static SVGStringList _get_systemLanguage(var _this) native;
-
-  bool hasExtension(String extension) {
-    return _hasExtension(this, extension);
-  }
-  static bool _hasExtension(receiver, extension) native;
-
-  String get typeName() { return "SVGTests"; }
-}