Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/SVGZoomEvent.dartdoc

Index: lib/html/doc/interface/SVGZoomEvent.dartdoc
diff --git a/lib/html/doc/interface/SVGZoomEvent.dartdoc b/lib/html/doc/interface/SVGZoomEvent.dartdoc
deleted file mode 100644
index 94e43a4f9b038c9e222dd49bf8ffb8688282c4f6..0000000000000000000000000000000000000000
--- a/lib/html/doc/interface/SVGZoomEvent.dartdoc
+++ /dev/null
@@ -1,26 +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 SVGZoomEvent
-interface SVGZoomEvent extends UIEvent {
-
-  /** @domName SVGZoomEvent.newScale */
-  final num newScale;
-
-  /** @domName SVGZoomEvent.newTranslate */
-  final SVGPoint newTranslate;
-
-  /** @domName SVGZoomEvent.previousScale */
-  final num previousScale;
-
-  /** @domName SVGZoomEvent.previousTranslate */
-  final SVGPoint previousTranslate;
-
-  /** @domName SVGZoomEvent.zoomRectScreen */
-  final SVGRect zoomRectScreen;
-}