Remove generated directories with 100s of files.

client/dom/generated/src/interface/Notification.dart

Index: client/dom/generated/src/interface/Notification.dart
diff --git a/client/dom/generated/src/interface/Notification.dart b/client/dom/generated/src/interface/Notification.dart
deleted file mode 100644
index 3c208c0e6fd0fa8d4b2e1fc5c39a8d8a3f79f29c..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/interface/Notification.dart
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright (c) 2012, 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.
-
-interface Notification extends EventTarget {
-
-  String dir;
-
-  String replaceId;
-
-  void addEventListener(String type, EventListener listener, [bool useCapture]);
-
-  void cancel();
-
-  bool dispatchEvent(Event evt);
-
-  void removeEventListener(String type, EventListener listener, [bool useCapture]);
-
-  void show();
-}