Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/SVGStringList.dartdoc

Index: lib/html/doc/interface/SVGStringList.dartdoc
diff --git a/lib/html/doc/interface/SVGStringList.dartdoc b/lib/html/doc/interface/SVGStringList.dartdoc
deleted file mode 100644
index 3e44b6cb0dba4744d5f833619ec4f364a4ea400d..0000000000000000000000000000000000000000
--- a/lib/html/doc/interface/SVGStringList.dartdoc
+++ /dev/null
@@ -1,35 +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:
-//   This file contains documentation that is merged into the real source.
-//   Do not make code changes here.
-
-/// @domName SVGStringList
-interface SVGStringList {
-
-  /** @domName SVGStringList.numberOfItems */
-  final int numberOfItems;
-
-  /** @domName SVGStringList.appendItem */
-  String appendItem(String item);
-
-  /** @domName SVGStringList.clear */
-  void clear();
-
-  /** @domName SVGStringList.getItem */
-  String getItem(int index);
-
-  /** @domName SVGStringList.initialize */
-  String initialize(String item);
-
-  /** @domName SVGStringList.insertItemBefore */
-  String insertItemBefore(String item, int index);
-
-  /** @domName SVGStringList.removeItem */
-  String removeItem(int index);
-
-  /** @domName SVGStringList.replaceItem */
-  String replaceItem(String item, int index);
-}