Remove generated directories with 100s of files.

client/dom/generated/src/interface/UIEvent.dart

Index: client/dom/generated/src/interface/UIEvent.dart
diff --git a/client/dom/generated/src/interface/UIEvent.dart b/client/dom/generated/src/interface/UIEvent.dart
deleted file mode 100644
index a63beed710f600baf6393723a7ade9cbd7af6a8e..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/interface/UIEvent.dart
+++ /dev/null
@@ -1,28 +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 UIEvent extends Event {
-
-  final int charCode;
-
-  final int detail;
-
-  final int keyCode;
-
-  final int layerX;
-
-  final int layerY;
-
-  final int pageX;
-
-  final int pageY;
-
-  final DOMWindow view;
-
-  final int which;
-
-  void initUIEvent(String type, bool canBubble, bool cancelable, DOMWindow view, int detail);
-}