Remove generated directories with 100s of files.

client/html/generated/html/interface/StorageEvent.dart

Index: client/html/generated/html/interface/StorageEvent.dart
diff --git a/client/html/generated/html/interface/StorageEvent.dart b/client/html/generated/html/interface/StorageEvent.dart
deleted file mode 100644
index 2002a70d32ffaf2522a0040d086b0fa151f6414c..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/StorageEvent.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 StorageEvent extends Event {
-
-  final String key;
-
-  final String newValue;
-
-  final String oldValue;
-
-  final Storage storageArea;
-
-  final String url;
-
-  void initStorageEvent(String typeArg, bool canBubbleArg, bool cancelableArg, String keyArg, String oldValueArg, String newValueArg, String urlArg, Storage storageAreaArg);
-}