Remove generated directories with 100s of files.

client/html/generated/html/interface/Screen.dart

Index: client/html/generated/html/interface/Screen.dart
diff --git a/client/html/generated/html/interface/Screen.dart b/client/html/generated/html/interface/Screen.dart
deleted file mode 100644
index 93242e6badc2c8ae157e0e306d19c1d1235d8dd4..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/Screen.dart
+++ /dev/null
@@ -1,24 +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 Screen {
-
-  final int availHeight;
-
-  final int availLeft;
-
-  final int availTop;
-
-  final int availWidth;
-
-  final int colorDepth;
-
-  final int height;
-
-  final int pixelDepth;
-
-  final int width;
-}