Remove references to Engine classes from protocol.dart

pkg/analysis_server/lib/src/search/search_result.dart

-// Copyright (c) 2014, 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.
-
-library search.search_result;
-
-import 'package:analysis_server/src/protocol.dart';
-import 'package:analysis_server/src/services/search/search_engine.dart';
-import 'package:analyzer/src/generated/element.dart' as engine;
-
-
-SearchResult searchResultFromMatch(SearchMatch match) {
-  SearchResultKind kind = new SearchResultKind.fromEngine(match.kind);
-  Location location = new Location.fromMatch(match);
-  List<Element> path = _computePath(match.element);
-  return new SearchResult(location, kind, !match.isResolved, path);
-}
-
-List<Element> _computePath(engine.Element element) {
-  List<Element> path = <Element>[];
-  while (element != null) {
-    path.add(new Element.fromEngine(element));
-    element = element.enclosingElement;
-  }
-  return path;
-}