Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_SVGStylableWrappingImplementation.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 _SVGStylableWrappingImplementation extends DOMWrapperBase implements SVGStylable {
-  _SVGStylableWrappingImplementation() : super() {}
-
-  static create__SVGStylableWrappingImplementation() native {
-    return new _SVGStylableWrappingImplementation();
-  }
-
-  SVGAnimatedString get className() { return _get_className(this); }
-  static SVGAnimatedString _get_className(var _this) native;
-
-  CSSStyleDeclaration get style() { return _get_style(this); }
-  static CSSStyleDeclaration _get_style(var _this) native;
-
-  CSSValue getPresentationAttribute(String name) {
-    return _getPresentationAttribute(this, name);
-  }
-  static CSSValue _getPresentationAttribute(receiver, name) native;
-
-  String get typeName() { return "SVGStylable"; }
-}