Remove unnecessary tests

pkg/analysis_server/test/domain_completion_test.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 test.domain.completion;
 
 import 'dart:async';
 
 import 'package:analysis_server/protocol/protocol.dart';
 import 'package:analysis_server/protocol/protocol_generated.dart';
-import 'package:analysis_server/src/domain_completion.dart';
 import 'package:analysis_server/src/plugin/plugin_manager.dart';
 import 'package:analysis_server/src/provisional/completion/completion_core.dart';
 import 'package:analysis_server/src/provisional/completion/dart/completion_dart.dart';
 import 'package:analysis_server/src/services/completion/dart/completion_manager.dart';
 import 'package:analysis_server/src/services/completion/dart/contribution_sorter.dart';
 import 'package:analyzer_plugin/protocol/protocol.dart' as plugin;
 import 'package:analyzer_plugin/protocol/protocol_constants.dart' as plugin;
 import 'package:analyzer_plugin/protocol/protocol_generated.dart' as plugin;
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import 'analysis_abstract.dart';
 import 'domain_completion_util.dart';
 import 'mocks.dart' show pumpEventQueue;
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(CompletionDomainHandlerTest);
-    defineReflectiveTests(_NoSearchEngine);
   });
 }
 
 @reflectiveTest
 class CompletionDomainHandlerTest extends AbstractCompletionDomainTest {
   @override
   void setUp() {
     enableNewAnalysisDriver = true;
     super.setUp();
   }
@@ skipping 739 matching lines @@
 
   @override
   Future sort(
       CompletionRequest request, Iterable<CompletionSuggestion> suggestions) {
     if (!enabled) {
       throw 'unexpected sort';
     }
     return new Future.value();
   }
 }
-
-@reflectiveTest
-class _NoSearchEngine extends AbstractAnalysisTest {
-  @override
-  void setUp() {
-    super.setUp();
-    createProject();
-    handler = new CompletionDomainHandler(server);
-  }
-
-  test_noSearchEngine() async {
-    addTestFile('''
-main() {
-  ^
-}
-    ''');
-    await waitForTasksFinished();
-    Request request =
-        new CompletionGetSuggestionsParams(testFile, 0).toRequest('0');
-    Response response = handler.handleRequest(request);
-    expect(response.error, isNotNull);
-    expect(response.error.code, RequestErrorCode.NO_INDEX_GENERATED);
-  }
-}