Remove 'initializeTestEnvironment' from 'analysis_server'.

pkg/analysis_server/test/analysis/navigation_collector_test.dart

Index: pkg/analysis_server/test/analysis/navigation_collector_test.dart
diff --git a/pkg/analysis_server/test/analysis/navigation_collector_test.dart b/pkg/analysis_server/test/analysis/navigation_collector_test.dart
index adc001559a1be81e25c4357a1a4791f640940ad9..cf712831202b5ccec2dc7026800937665aaa9982 100644
--- a/pkg/analysis_server/test/analysis/navigation_collector_test.dart
+++ b/pkg/analysis_server/test/analysis/navigation_collector_test.dart
@@ -9,10 +9,7 @@ import 'package:analysis_server/src/domains/analysis/navigation.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../utils.dart';
-
 main() {
-  initializeTestEnvironment();
   defineReflectiveSuite(() {
     defineReflectiveTests(NavigationCollectorImplTest);
   });