Remove generated directories with 100s of files.

client/html/generated/html/interface/Text.dart

Index: client/html/generated/html/interface/Text.dart
diff --git a/client/html/generated/html/interface/Text.dart b/client/html/generated/html/interface/Text.dart
deleted file mode 100644
index 2697922db7f86480e215cbbdd17acdc5d5c46f38..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/Text.dart
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright (c) 2011, 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 Text extends CharacterData default _TextFactoryProvider {
-
-  Text(String data);
-
-  final String wholeText;
-
-  Text replaceWholeText(String content);
-
-  Text splitText(int offset);
-}