Remove generated directories with 100s of files.

client/html/generated/html/interface/SVGPathSegArcRel.dart

Index: client/html/generated/html/interface/SVGPathSegArcRel.dart
diff --git a/client/html/generated/html/interface/SVGPathSegArcRel.dart b/client/html/generated/html/interface/SVGPathSegArcRel.dart
deleted file mode 100644
index e6d607468ca8a3bd0b6ffc91dac5bfa8c23910c9..0000000000000000000000000000000000000000
--- a/client/html/generated/html/interface/SVGPathSegArcRel.dart
+++ /dev/null
@@ -1,22 +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 SVGPathSegArcRel extends SVGPathSeg {
-
-  num angle;
-
-  bool largeArcFlag;
-
-  num r1;
-
-  num r2;
-
-  bool sweepFlag;
-
-  num x;
-
-  num y;
-}