Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/XPathResult.dartdoc

Index: lib/html/doc/interface/XPathResult.dartdoc
diff --git a/lib/html/doc/interface/XPathResult.dartdoc b/lib/html/doc/interface/XPathResult.dartdoc
deleted file mode 100644
index 272447ff798e4cc112f6e83642ffb028a33f679d..0000000000000000000000000000000000000000
--- a/lib/html/doc/interface/XPathResult.dartdoc
+++ /dev/null
@@ -1,58 +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 XPathResult
-interface XPathResult {
-
-  static final int ANY_TYPE = 0;
-
-  static final int ANY_UNORDERED_NODE_TYPE = 8;
-
-  static final int BOOLEAN_TYPE = 3;
-
-  static final int FIRST_ORDERED_NODE_TYPE = 9;
-
-  static final int NUMBER_TYPE = 1;
-
-  static final int ORDERED_NODE_ITERATOR_TYPE = 5;
-
-  static final int ORDERED_NODE_SNAPSHOT_TYPE = 7;
-
-  static final int STRING_TYPE = 2;
-
-  static final int UNORDERED_NODE_ITERATOR_TYPE = 4;
-
-  static final int UNORDERED_NODE_SNAPSHOT_TYPE = 6;
-
-  /** @domName XPathResult.booleanValue */
-  final bool booleanValue;
-
-  /** @domName XPathResult.invalidIteratorState */
-  final bool invalidIteratorState;
-
-  /** @domName XPathResult.numberValue */
-  final num numberValue;
-
-  /** @domName XPathResult.resultType */
-  final int resultType;
-
-  /** @domName XPathResult.singleNodeValue */
-  final Node singleNodeValue;
-
-  /** @domName XPathResult.snapshotLength */
-  final int snapshotLength;
-
-  /** @domName XPathResult.stringValue */
-  final String stringValue;
-
-  /** @domName XPathResult.iterateNext */
-  Node iterateNext();
-
-  /** @domName XPathResult.snapshotItem */
-  Node snapshotItem(int index);
-}