Remove generated directories with 100s of files.

client/html/generated/html/interface/MediaList.dart

Index: client/html/generated/html/interface/MediaList.dart
diff --git a/client/html/generated/html/interface/MediaList.dart b/client/html/generated/html/interface/MediaList.dart
deleted file mode 100644
index 073007181ca0df85d96d08aa4c25f19cba54773a..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/MediaList.dart
+++ /dev/null
@@ -1,18 +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 MediaList extends List<String> {
-
-  final int length;
-
-  String mediaText;
-
-  void appendMedium(String newMedium);
-
-  void deleteMedium(String oldMedium);
-
-  String item(int index);
-}