Remove generated directories with 100s of files.

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

Index: client/dom/generated/src/interface/HashChangeEvent.dart
diff --git a/client/dom/generated/src/interface/HashChangeEvent.dart b/client/dom/generated/src/interface/HashChangeEvent.dart
deleted file mode 100644
index cd7c28cffaeca6aee6756a16b50355ce53ec649c..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/interface/HashChangeEvent.dart
+++ /dev/null
@@ -1,14 +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 HashChangeEvent extends Event {
-
-  final String newURL;
-
-  final String oldURL;
-
-  void initHashChangeEvent(String type, bool canBubble, bool cancelable, String oldURL, String newURL);
-}