Remove generated directories with 100s of files.

client/html/generated/html/interface/FormElement.dart

Index: client/html/generated/html/interface/FormElement.dart
diff --git a/client/html/generated/html/interface/FormElement.dart b/client/html/generated/html/interface/FormElement.dart
deleted file mode 100644
index 52c4f8ddada26a034996f77db11150bcf0527152..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/FormElement.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 FormElement extends Element {
-
-  String acceptCharset;
-
-  String action;
-
-  String autocomplete;
-
-  String encoding;
-
-  String enctype;
-
-  final int length;
-
-  String method;
-
-  String name;
-
-  bool noValidate;
-
-  String target;
-
-  bool checkValidity();
-
-  void reset();
-
-  void submit();
-}