Remove generated directories with 100s of files.

client/html/generated/html/interface/Notification.dart

Index: client/html/generated/html/interface/Notification.dart
diff --git a/client/html/generated/html/interface/Notification.dart b/client/html/generated/html/interface/Notification.dart
deleted file mode 100644
index c5e544427292ee24d66b9cad8cc10abc1b988bb9..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/Notification.dart
+++ /dev/null
@@ -1,31 +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 {
-
-  NotificationEvents get on();
-
-  String dir;
-
-  String replaceId;
-
-  void cancel();
-
-  void show();
-}
-
-interface NotificationEvents extends Events {
-
-  EventListenerList get click();
-
-  EventListenerList get close();
-
-  EventListenerList get display();
-
-  EventListenerList get error();
-
-  EventListenerList get show();
-}