Remove generated directories with 100s of files.

client/html/generated/html/interface/MediaStream.dart

Index: client/html/generated/html/interface/MediaStream.dart
diff --git a/client/html/generated/html/interface/MediaStream.dart b/client/html/generated/html/interface/MediaStream.dart
deleted file mode 100644
index 32ca7b1de78ddeb83734d781bcc835265df620eb..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/MediaStream.dart
+++ /dev/null
@@ -1,30 +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 MediaStream default _MediaStreamFactoryProvider {
-
-  MediaStream(MediaStreamTrackList audioTracks, MediaStreamTrackList videoTracks);
-
-  static final int ENDED = 2;
-
-  static final int LIVE = 1;
-
-  final MediaStreamTrackList audioTracks;
-
-  final String label;
-
-  EventListener onended;
-
-  final int readyState;
-
-  final MediaStreamTrackList videoTracks;
-
-  void addEventListener(String type, EventListener listener, [bool useCapture]);
-
-  bool dispatchEvent(Event event);
-
-  void removeEventListener(String type, EventListener listener, [bool useCapture]);
-}