Cleanup some unused code in some of the tests

pkg/analysis_server/test/services/refactoring/abstract_refactoring.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/src/services/correction/status.dart';
 import 'package:analysis_server/src/services/index/index.dart';
 import 'package:analysis_server/src/services/refactoring/refactoring.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
-import 'package:analysis_server/src/services/search/search_engine_internal.dart';
 import 'package:analysis_server/src/services/search/search_engine_internal2.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart' show Element;
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/dart/analysis/ast_provider_context.dart';
 import 'package:analyzer/src/dart/analysis/ast_provider_driver.dart';
 import 'package:analyzer/src/dart/element/ast_provider.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart'
     show
         RefactoringProblem,
         RefactoringProblemSeverity,
         SourceChange,
         SourceEdit,
         SourceFileEdit;
@@ skipping 131 matching lines @@
   /**
    * Completes with a fully resolved unit that contains the [element].
    */
   Future<CompilationUnit> getResolvedUnitWithElement(Element element) async {
     return element.context
         .resolveCompilationUnit(element.source, element.library);
   }
 
   Future<Null> indexTestUnit(String code) async {
     await resolveTestUnit(code);
-    if (!enableNewAnalysisDriver) {
-      index.indexUnit(testUnit);
-    }
   }
 
   Future<Null> indexUnit(String file, String code) async {
-    Source source = addSource(file, code);
-    if (!enableNewAnalysisDriver) {
-      CompilationUnit unit = await resolveLibraryUnit(source);
-      index.indexUnit(unit);
-    }
+    addSource(file, code);
   }
 
   void setUp() {
     super.setUp();
-    if (enableNewAnalysisDriver) {
-      searchEngine = new SearchEngineImpl2([driver]);
-      astProvider = new AstProviderForDriver(driver);
-    } else {
-      index = createMemoryIndex();
-      searchEngine = new SearchEngineImpl(
-          index, (_) => new AstProviderForContext(context));
-      astProvider = new AstProviderForContext(context);
-    }
+    searchEngine = new SearchEngineImpl2([driver]);
+    astProvider = new AstProviderForDriver(driver);
   }
 }