Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_SVGAltGlyphElementWrappingImplementation.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 _SVGAltGlyphElementWrappingImplementation extends _SVGTextPositioningElementWrappingImplementation implements SVGAltGlyphElement {
-  _SVGAltGlyphElementWrappingImplementation() : super() {}
-
-  static create__SVGAltGlyphElementWrappingImplementation() native {
-    return new _SVGAltGlyphElementWrappingImplementation();
-  }
-
-  String get format() { return _get_format(this); }
-  static String _get_format(var _this) native;
-
-  void set format(String value) { _set_format(this, value); }
-  static void _set_format(var _this, String value) native;
-
-  String get glyphRef() { return _get_glyphRef(this); }
-  static String _get_glyphRef(var _this) native;
-
-  void set glyphRef(String value) { _set_glyphRef(this, value); }
-  static void _set_glyphRef(var _this, String value) native;
-
-  // From SVGURIReference
-
-  SVGAnimatedString get href() { return _get_href(this); }
-  static SVGAnimatedString _get_href(var _this) native;
-
-  String get typeName() { return "SVGAltGlyphElement"; }
-}