Remove generated directories with 100s of files.

client/html/generated/html/interface/EventException.dart

Index: client/html/generated/html/interface/EventException.dart
diff --git a/client/html/generated/html/interface/EventException.dart b/client/html/generated/html/interface/EventException.dart
deleted file mode 100644
index 5a4554c0d579c031528e7ea8dc4c6e7338a067e6..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/EventException.dart
+++ /dev/null
@@ -1,20 +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 EventException {
-
-  static final int DISPATCH_REQUEST_ERR = 1;
-
-  static final int UNSPECIFIED_EVENT_TYPE_ERR = 0;
-
-  final int code;
-
-  final String message;
-
-  final String name;
-
-  String toString();
-}