Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/SVGImageElement.dartdoc

Index: lib/html/doc/interface/SVGImageElement.dartdoc
diff --git a/lib/html/doc/interface/SVGImageElement.dartdoc b/lib/html/doc/interface/SVGImageElement.dartdoc
deleted file mode 100644
index 10c87db0354b05bb3877acb48fb93d778808f6af..0000000000000000000000000000000000000000
--- a/lib/html/doc/interface/SVGImageElement.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 SVGImageElement
-interface SVGImageElement extends SVGElement, SVGURIReference, SVGTests, SVGLangSpace, SVGExternalResourcesRequired, SVGStylable, SVGTransformable {
-
-  /** @domName SVGImageElement.height */
-  final SVGAnimatedLength height;
-
-  /** @domName SVGImageElement.preserveAspectRatio */
-  final SVGAnimatedPreserveAspectRatio preserveAspectRatio;
-
-  /** @domName SVGImageElement.width */
-  final SVGAnimatedLength width;
-
-  /** @domName SVGImageElement.x */
-  final SVGAnimatedLength x;
-
-  /** @domName SVGImageElement.y */
-  final SVGAnimatedLength y;
-}