Remove the unused operations queue

pkg/analysis_server/test/analysis/update_content_test.dart

 // Copyright (c) 2015, 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 'package:analysis_server/protocol/protocol.dart';
 import 'package:analysis_server/protocol/protocol_generated.dart';
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/services/index/index.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
@@ skipping 47 matching lines @@
   test_discardNotifications_onSourceChange() async {
     createProject();
     addTestFile('');
     await server.onAnalysisComplete;
     server.setAnalysisSubscriptions({
       AnalysisService.NAVIGATION: [testFile].toSet()
     });
     // update file, analyze, but don't sent notifications
     navigationCount = 0;
     server.updateContent('1', {testFile: new AddContentOverlay('foo() {}')});
-    server.test_performAllAnalysisOperations();
     expect(serverErrorCount, 0);
     expect(navigationCount, 0);
     // replace the file contents,
     // should discard any pending notification operations
     server.updateContent('2', {testFile: new AddContentOverlay('bar() {}')});
     await server.onAnalysisComplete;
     expect(serverErrorCount, 0);
     expect(navigationCount, 1);
   }
 
@@ skipping 232 matching lines @@
 
   @override
   bool matches(arg) {
     return arg is CompilationUnit &&
         resolutionMap.elementDeclaredByCompilationUnit(arg).source.fullName ==
             file;
   }
 }
 
 class _MockIndex extends TypedMock implements Index {}