Remove the old index.

pkg/analysis_server/test/analysis/update_content_test.dart

Index: pkg/analysis_server/test/analysis/update_content_test.dart
diff --git a/pkg/analysis_server/test/analysis/update_content_test.dart b/pkg/analysis_server/test/analysis/update_content_test.dart
index 77546a80578abaca54c808a0f44c2a7cfe75f27a..43b11d659bcdd4672d5853f104a3e86478fbf60e 100644
--- a/pkg/analysis_server/test/analysis/update_content_test.dart
+++ b/pkg/analysis_server/test/analysis/update_content_test.dart
@@ -5,7 +5,6 @@
 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/services/index/index.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/file_system/file_system.dart';
@@ -35,10 +34,6 @@ class UpdateContentTest extends AbstractAnalysisTest {
   int serverErrorCount = 0;
   int navigationCount = 0;
 
-  Index createIndex() {
-    return new _MockIndex();
-  }
-
   @override
   void processNotification(Notification notification) {
     if (notification.event == ANALYSIS_NOTIFICATION_ERRORS) {
@@ -315,5 +310,3 @@ class _ArgumentMatcher_CompilationUnit extends ArgumentMatcher {
             file;
   }
 }
-
-class _MockIndex extends TypedMock implements Index {}