Use package:test_reflective_loader instead of reflective_tests.

pkg/analysis_server/test/services/correction/levenshtein_test.dart

Index: pkg/analysis_server/test/services/correction/levenshtein_test.dart
diff --git a/pkg/analysis_server/test/services/correction/levenshtein_test.dart b/pkg/analysis_server/test/services/correction/levenshtein_test.dart
index ecda77cffddf929f44d3af0fff9b066a3f9e79ab..bf5d6e56c9506942207fe209ab422f54ea16a0fd 100644
--- a/pkg/analysis_server/test/services/correction/levenshtein_test.dart
+++ b/pkg/analysis_server/test/services/correction/levenshtein_test.dart
@@ -5,13 +5,12 @@
 library test.services.correction.levenshtein;
 
 import 'package:analysis_server/src/services/correction/levenshtein.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:unittest/unittest.dart';
 
-import '../../reflective_tests.dart';
-
 main() {
   groupSep = ' | ';
-  runReflectiveTests(LevenshteinTest);
+  defineReflectiveTests(LevenshteinTest);
 }
 
 @reflectiveTest