Remove generated directories with 100s of files.

client/html/generated/html/interface/ScriptElement.dart

Index: client/html/generated/html/interface/ScriptElement.dart
diff --git a/client/html/generated/html/interface/ScriptElement.dart b/client/html/generated/html/interface/ScriptElement.dart
deleted file mode 100644
index d0f2004114d4b55d92c9a592e9bae0f3d9625397..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/ScriptElement.dart
+++ /dev/null
@@ -1,22 +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 ScriptElement extends Element {
-
-  bool async;
-
-  String charset;
-
-  bool defer;
-
-  String event;
-
-  String htmlFor;
-
-  String src;
-
-  String type;
-}