Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/SVGFilterElement.dartdoc

-// 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 SVGFilterElement
-interface SVGFilterElement extends SVGElement, SVGURIReference, SVGLangSpace, SVGExternalResourcesRequired, SVGStylable {
-
-  /** @domName SVGFilterElement.filterResX */
-  final SVGAnimatedInteger filterResX;
-
-  /** @domName SVGFilterElement.filterResY */
-  final SVGAnimatedInteger filterResY;
-
-  /** @domName SVGFilterElement.filterUnits */
-  final SVGAnimatedEnumeration filterUnits;
-
-  /** @domName SVGFilterElement.height */
-  final SVGAnimatedLength height;
-
-  /** @domName SVGFilterElement.primitiveUnits */
-  final SVGAnimatedEnumeration primitiveUnits;
-
-  /** @domName SVGFilterElement.width */
-  final SVGAnimatedLength width;
-
-  /** @domName SVGFilterElement.x */
-  final SVGAnimatedLength x;
-
-  /** @domName SVGFilterElement.y */
-  final SVGAnimatedLength y;
-
-  /** @domName SVGFilterElement.setFilterRes */
-  void setFilterRes(int filterResX, int filterResY);
-}