Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/Coordinates.dartdoc

Index: lib/html/doc/interface/Coordinates.dartdoc
diff --git a/lib/html/doc/interface/Coordinates.dartdoc b/lib/html/doc/interface/Coordinates.dartdoc
deleted file mode 100644
index eb9578dc1fdab344e52e6f1d6b1cf4503e986c44..0000000000000000000000000000000000000000
--- a/lib/html/doc/interface/Coordinates.dartdoc
+++ /dev/null
@@ -1,32 +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 Coordinates
-interface Coordinates {
-
-  /** @domName Coordinates.accuracy */
-  final num accuracy;
-
-  /** @domName Coordinates.altitude */
-  final num altitude;
-
-  /** @domName Coordinates.altitudeAccuracy */
-  final num altitudeAccuracy;
-
-  /** @domName Coordinates.heading */
-  final num heading;
-
-  /** @domName Coordinates.latitude */
-  final num latitude;
-
-  /** @domName Coordinates.longitude */
-  final num longitude;
-
-  /** @domName Coordinates.speed */
-  final num speed;
-}