Remove generated directories with 100s of files.

client/html/generated/html/interface/TableRowElement.dart

Index: client/html/generated/html/interface/TableRowElement.dart
diff --git a/client/html/generated/html/interface/TableRowElement.dart b/client/html/generated/html/interface/TableRowElement.dart
deleted file mode 100644
index 61624baa437ac24bb1841c3034f8672aaa161657..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/TableRowElement.dart
+++ /dev/null
@@ -1,28 +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 TableRowElement extends Element {
-
-  String align;
-
-  String bgColor;
-
-  final HTMLCollection cells;
-
-  String ch;
-
-  String chOff;
-
-  final int rowIndex;
-
-  final int sectionRowIndex;
-
-  String vAlign;
-
-  void deleteCell(int index);
-
-  Element insertCell(int index);
-}