Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/SVGTextPathElement.dartdoc

Index: lib/html/doc/interface/SVGTextPathElement.dartdoc
diff --git a/lib/html/doc/interface/SVGTextPathElement.dartdoc b/lib/html/doc/interface/SVGTextPathElement.dartdoc
deleted file mode 100644
index 3d2de35cd7de38b2b1933d34813f1ec6018ee47d..0000000000000000000000000000000000000000
--- a/lib/html/doc/interface/SVGTextPathElement.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 SVGTextPathElement
-interface SVGTextPathElement extends SVGTextContentElement, SVGURIReference {
-
-  static final int TEXTPATH_METHODTYPE_ALIGN = 1;
-
-  static final int TEXTPATH_METHODTYPE_STRETCH = 2;
-
-  static final int TEXTPATH_METHODTYPE_UNKNOWN = 0;
-
-  static final int TEXTPATH_SPACINGTYPE_AUTO = 1;
-
-  static final int TEXTPATH_SPACINGTYPE_EXACT = 2;
-
-  static final int TEXTPATH_SPACINGTYPE_UNKNOWN = 0;
-
-  /** @domName SVGTextPathElement.method */
-  final SVGAnimatedEnumeration method;
-
-  /** @domName SVGTextPathElement.spacing */
-  final SVGAnimatedEnumeration spacing;
-
-  /** @domName SVGTextPathElement.startOffset */
-  final SVGAnimatedLength startOffset;
-}