Remove generated directories with 100s of files.

client/html/generated/html/interface/FileException.dart

Index: client/html/generated/html/interface/FileException.dart
diff --git a/client/html/generated/html/interface/FileException.dart b/client/html/generated/html/interface/FileException.dart
deleted file mode 100644
index 1bd4571c055bd5d11f194f91e34361fb63de3632..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/FileException.dart
+++ /dev/null
@@ -1,40 +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 FileException {
-
-  static final int ABORT_ERR = 3;
-
-  static final int ENCODING_ERR = 5;
-
-  static final int INVALID_MODIFICATION_ERR = 9;
-
-  static final int INVALID_STATE_ERR = 7;
-
-  static final int NOT_FOUND_ERR = 1;
-
-  static final int NOT_READABLE_ERR = 4;
-
-  static final int NO_MODIFICATION_ALLOWED_ERR = 6;
-
-  static final int PATH_EXISTS_ERR = 12;
-
-  static final int QUOTA_EXCEEDED_ERR = 10;
-
-  static final int SECURITY_ERR = 2;
-
-  static final int SYNTAX_ERR = 8;
-
-  static final int TYPE_MISMATCH_ERR = 11;
-
-  final int code;
-
-  final String message;
-
-  final String name;
-
-  String toString();
-}