Remove generated directories with 100s of files.

client/html/generated/html/interface/SVGRectElement.dart

Index: client/html/generated/html/interface/SVGRectElement.dart
diff --git a/client/html/generated/html/interface/SVGRectElement.dart b/client/html/generated/html/interface/SVGRectElement.dart
deleted file mode 100644
index 3a6e318613460776115f04d270cadfa2f149a69d..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/SVGRectElement.dart
+++ /dev/null
@@ -1,20 +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 SVGRectElement extends SVGElement, SVGTests, SVGLangSpace, SVGExternalResourcesRequired, SVGStylable, SVGTransformable {
-
-  final SVGAnimatedLength height;
-
-  final SVGAnimatedLength rx;
-
-  final SVGAnimatedLength ry;
-
-  final SVGAnimatedLength width;
-
-  final SVGAnimatedLength x;
-
-  final SVGAnimatedLength y;
-}