Remove generated directories with 100s of files.

client/html/generated/html/interface/VideoElement.dart

Index: client/html/generated/html/interface/VideoElement.dart
diff --git a/client/html/generated/html/interface/VideoElement.dart b/client/html/generated/html/interface/VideoElement.dart
deleted file mode 100644
index 3d47ed09724ee0dace89b0ec96cbadfb6fe3ac07..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/VideoElement.dart
+++ /dev/null
@@ -1,34 +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 VideoElement extends MediaElement {
-
-  int height;
-
-  String poster;
-
-  final int videoHeight;
-
-  final int videoWidth;
-
-  final int webkitDecodedFrameCount;
-
-  final bool webkitDisplayingFullscreen;
-
-  final int webkitDroppedFrameCount;
-
-  final bool webkitSupportsFullscreen;
-
-  int width;
-
-  void webkitEnterFullScreen();
-
-  void webkitEnterFullscreen();
-
-  void webkitExitFullScreen();
-
-  void webkitExitFullscreen();
-}