Remove generated directories with 100s of files.

client/html/generated/html/interface/MessagePort.dart

Index: client/html/generated/html/interface/MessagePort.dart
diff --git a/client/html/generated/html/interface/MessagePort.dart b/client/html/generated/html/interface/MessagePort.dart
deleted file mode 100644
index a5e106e3372756aceb4e41ae04a70b7e33738066..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/MessagePort.dart
+++ /dev/null
@@ -1,29 +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 MessagePort extends EventTarget {
-
-  MessagePortEvents get on();
-
-  void _addEventListener(String type, EventListener listener, [bool useCapture]);
-
-  void close();
-
-  bool _dispatchEvent(Event evt);
-
-  void postMessage(String message, [List messagePorts]);
-
-  void _removeEventListener(String type, EventListener listener, [bool useCapture]);
-
-  void start();
-
-  void webkitPostMessage(String message, [List transfer]);
-}
-
-interface MessagePortEvents extends Events {
-
-  EventListenerList get message();
-}