Remove generated directories with 100s of files.

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

Index: client/dom/generated/src/wrapping/_PopStateEventWrappingImplementation.dart
diff --git a/client/dom/generated/src/wrapping/_PopStateEventWrappingImplementation.dart b/client/dom/generated/src/wrapping/_PopStateEventWrappingImplementation.dart
deleted file mode 100644
index aab7fb9ee20ec00777f2f10c79e50e8ae75b7a87..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/wrapping/_PopStateEventWrappingImplementation.dart
+++ /dev/null
@@ -1,18 +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 _PopStateEventWrappingImplementation extends _EventWrappingImplementation implements PopStateEvent {
-  _PopStateEventWrappingImplementation() : super() {}
-
-  static create__PopStateEventWrappingImplementation() native {
-    return new _PopStateEventWrappingImplementation();
-  }
-
-  Object get state() { return _get_state(this); }
-  static Object _get_state(var _this) native;
-
-  String get typeName() { return "PopStateEvent"; }
-}