Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_HTMLBRElementWrappingImplementation.dart

Index: client/dom/generated/src/wrapping/_HTMLBRElementWrappingImplementation.dart
diff --git a/client/dom/generated/src/wrapping/_HTMLBRElementWrappingImplementation.dart b/client/dom/generated/src/wrapping/_HTMLBRElementWrappingImplementation.dart
deleted file mode 100644
index cf3c81827073ddc74ac5e64fa83329f8116c6b5c..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/wrapping/_HTMLBRElementWrappingImplementation.dart
+++ /dev/null
@@ -1,21 +0,0 @@
-// 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 _HTMLBRElementWrappingImplementation extends _HTMLElementWrappingImplementation implements HTMLBRElement {
-  _HTMLBRElementWrappingImplementation() : super() {}
-
-  static create__HTMLBRElementWrappingImplementation() native {
-    return new _HTMLBRElementWrappingImplementation();
-  }
-
-  String get clear() { return _get_clear(this); }
-  static String _get_clear(var _this) native;
-
-  void set clear(String value) { _set_clear(this, value); }
-  static void _set_clear(var _this, String value) native;
-
-  String get typeName() { return "HTMLBRElement"; }
-}