Remove generated directories with 100s of files.

client/html/generated/html/interface/ImageElement.dart

Index: client/html/generated/html/interface/ImageElement.dart
diff --git a/client/html/generated/html/interface/ImageElement.dart b/client/html/generated/html/interface/ImageElement.dart
deleted file mode 100644
index 3d3cd291e7b152e4368d8c28255af11addd017e2..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/ImageElement.dart
+++ /dev/null
@@ -1,46 +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 ImageElement extends Element {
-
-  String align;
-
-  String alt;
-
-  String border;
-
-  final bool complete;
-
-  String crossOrigin;
-
-  int height;
-
-  int hspace;
-
-  bool isMap;
-
-  String longDesc;
-
-  String lowsrc;
-
-  String name;
-
-  final int naturalHeight;
-
-  final int naturalWidth;
-
-  String src;
-
-  String useMap;
-
-  int vspace;
-
-  int width;
-
-  final int x;
-
-  final int y;
-}