Remove 'initializeTestEnvironment' from 'analyzer'.

pkg/analyzer/test/generated/inheritance_manager_test.dart

Index: pkg/analyzer/test/generated/inheritance_manager_test.dart
diff --git a/pkg/analyzer/test/generated/inheritance_manager_test.dart b/pkg/analyzer/test/generated/inheritance_manager_test.dart
index 1377193672b371b3ec2df625b54c5c5968ba4199..5b3ba8e83f0e8a4f5e076da77edce872eaba4b78 100644
--- a/pkg/analyzer/test/generated/inheritance_manager_test.dart
+++ b/pkg/analyzer/test/generated/inheritance_manager_test.dart
@@ -24,12 +24,10 @@ import 'package:analyzer/src/source/source_resource.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../utils.dart';
 import 'analysis_context_factory.dart';
 import 'test_support.dart';
 
 main() {
-  initializeTestEnvironment();
   defineReflectiveSuite(() {
     defineReflectiveTests(InheritanceManagerTest);
   });