Remove generated directories with 100s of files.

client/html/generated/html/interface/SVGLineElement.dart

Index: client/html/generated/html/interface/SVGLineElement.dart
diff --git a/client/html/generated/html/interface/SVGLineElement.dart b/client/html/generated/html/interface/SVGLineElement.dart
deleted file mode 100644
index c3259d6b0a36a977d50f8bd9407d58268f3657ed..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/SVGLineElement.dart
+++ /dev/null
@@ -1,16 +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 SVGLineElement extends SVGElement, SVGTests, SVGLangSpace, SVGExternalResourcesRequired, SVGStylable, SVGTransformable {
-
-  final SVGAnimatedLength x1;
-
-  final SVGAnimatedLength x2;
-
-  final SVGAnimatedLength y1;
-
-  final SVGAnimatedLength y2;
-}