Remove the old index.

pkg/analysis_server/test/domain_completion_util.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/constants.dart';
 import 'package:analysis_server/src/domain_completion.dart';
 import 'package:analysis_server/src/provisional/completion/dart/completion_dart.dart';
-import 'package:analysis_server/src/services/index/index.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:test/test.dart';
 
 import 'analysis_abstract.dart';
 
 class AbstractCompletionDomainTest extends AbstractAnalysisTest {
   String completionId;
   int completionOffset;
   int replacementOffset;
   int replacementLength;
@@ skipping 47 matching lines @@
     if (suggestions.any((cs) => cs.completion == completion)) {
       fail('did not expect completion: $completion');
     }
   }
 
   void assertValidId(String id) {
     expect(id, isNotNull);
     expect(id.isNotEmpty, isTrue);
   }
 
-  @override
-  Index createIndex() {
-    return createMemoryIndex();
-  }
-
   Future getSuggestions() async {
     await waitForTasksFinished();
 
     Request request =
         new CompletionGetSuggestionsParams(testFile, completionOffset)
             .toRequest('0');
     Response response = await waitResponse(request);
     var result = new CompletionGetSuggestionsResult.fromResponse(response);
     completionId = result.id;
     assertValidId(completionId);
@@ skipping 24 matching lines @@
     super.setUp();
     createProject();
     handler = new CompletionDomainHandler(server);
   }
 
   Completer<Null> _getResultsCompleter(String id) {
     return receivedSuggestionsCompleters.putIfAbsent(
         id, () => new Completer<Null>());
   }
 }