Remove the old index.

pkg/analysis_server/test/search/abstract_search_domain.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.
 
 import 'dart:async';
 
 import 'package:analysis_server/protocol/protocol.dart';
 import 'package:analysis_server/protocol/protocol_constants.dart';
 import 'package:analysis_server/protocol/protocol_generated.dart';
 import 'package:analysis_server/src/search/search_domain.dart';
-import 'package:analysis_server/src/services/index/index.dart'
-    show Index, createMemoryIndex;
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:test/test.dart';
 
 import '../analysis_abstract.dart';
 
 class AbstractSearchDomainTest extends AbstractAnalysisTest {
   final Map<String, _ResultSet> resultSets = {};
   String searchId;
   List<SearchResult> results = <SearchResult>[];
   SearchResult result;
 
   void assertHasResult(SearchResultKind kind, String search, [int length]) {
     int offset = findOffset(search);
     if (length == null) {
       length = findIdentifierLength(search);
     }
     findResult(kind, testFile, offset, length, true);
   }
 
   void assertNoResult(SearchResultKind kind, String search, [int length]) {
     int offset = findOffset(search);
     if (length == null) {
       length = findIdentifierLength(search);
     }
     findResult(kind, testFile, offset, length, false);
   }
 
-  @override
-  Index createIndex() {
-    return createMemoryIndex();
-  }
-
   void findResult(SearchResultKind kind, String file, int offset, int length,
       bool expected) {
     for (SearchResult result in results) {
       Location location = result.location;
       if (result.kind == kind &&
           location.file == file &&
           location.offset == offset &&
           location.length == length) {
         if (!expected) {
           fail('Unexpected result $result in\n' + results.join('\n'));
@@ skipping 56 matching lines @@
   }
 }
 
 class _ResultSet {
   final String id;
   final List<SearchResult> results = <SearchResult>[];
   bool done = false;
 
   _ResultSet(this.id);
 }