Remove generated directories with 100s of files.

client/html/generated/html/interface/FileWriter.dart

Index: client/html/generated/html/interface/FileWriter.dart
diff --git a/client/html/generated/html/interface/FileWriter.dart b/client/html/generated/html/interface/FileWriter.dart
deleted file mode 100644
index 16043f2e299d41c33e07aca6567617af4b68a376..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/FileWriter.dart
+++ /dev/null
@@ -1,42 +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 FileWriter {
-
-  static final int DONE = 2;
-
-  static final int INIT = 0;
-
-  static final int WRITING = 1;
-
-  final FileError error;
-
-  final int length;
-
-  EventListener onabort;
-
-  EventListener onerror;
-
-  EventListener onprogress;
-
-  EventListener onwrite;
-
-  EventListener onwriteend;
-
-  EventListener onwritestart;
-
-  final int position;
-
-  final int readyState;
-
-  void abort();
-
-  void seek(int position);
-
-  void truncate(int size);
-
-  void write(Blob data);
-}