Remove 'initializeTestEnvironment' from 'analyzer'.

pkg/analyzer/test/src/dart/test_all.dart

Index: pkg/analyzer/test/src/dart/test_all.dart
diff --git a/pkg/analyzer/test/src/dart/test_all.dart b/pkg/analyzer/test/src/dart/test_all.dart
index e4c05c4e02a8939ee535ce8a70c7c82a7af911c8..11368b5601645a6bedec068ac39104c139d89ee4 100644
--- a/pkg/analyzer/test/src/dart/test_all.dart
+++ b/pkg/analyzer/test/src/dart/test_all.dart
@@ -6,7 +6,6 @@ library analyzer.test.src.dart.test_all;
 
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../../utils.dart';
 import 'ast/test_all.dart' as ast;
 import 'constant/test_all.dart' as constant;
 import 'element/test_all.dart' as element;
@@ -14,7 +13,6 @@ import 'sdk/test_all.dart' as sdk;
 
 /// Utility for manually running all tests.
 main() {
-  initializeTestEnvironment();
   defineReflectiveSuite(() {
     ast.main();
     constant.main();