Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/SVGZoomAndPan.dartdoc

Index: lib/html/doc/interface/SVGZoomAndPan.dartdoc
diff --git a/lib/html/doc/interface/SVGZoomAndPan.dartdoc b/lib/html/doc/interface/SVGZoomAndPan.dartdoc
deleted file mode 100644
index 922254062abec0bd73e3ccfceb4c4116be44eda3..0000000000000000000000000000000000000000
--- a/lib/html/doc/interface/SVGZoomAndPan.dartdoc
+++ /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:
-//   This file contains documentation that is merged into the real source.
-//   Do not make code changes here.
-
-/// @domName SVGZoomAndPan
-interface SVGZoomAndPan {
-
-  static final int SVG_ZOOMANDPAN_DISABLE = 1;
-
-  static final int SVG_ZOOMANDPAN_MAGNIFY = 2;
-
-  static final int SVG_ZOOMANDPAN_UNKNOWN = 0;
-
-  /** @domName SVGZoomAndPan.zoomAndPan */
-  int zoomAndPan;
-}