Remove 'initializeTestEnvironment' from 'analyzer'.

pkg/analyzer/test/src/test_all.dart

Index: pkg/analyzer/test/src/test_all.dart
diff --git a/pkg/analyzer/test/src/test_all.dart b/pkg/analyzer/test/src/test_all.dart
index 752102abfd8136e1352cc1cfc372ae9ef23f8d02..41743e2d9370a2493c2ceb641b71dc3d6878afc6 100644
--- a/pkg/analyzer/test/src/test_all.dart
+++ b/pkg/analyzer/test/src/test_all.dart
@@ -6,7 +6,6 @@ library analyzer.test.src.test_all;
 
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../utils.dart';
 import 'context/test_all.dart' as context;
 import 'dart/test_all.dart' as dart;
 import 'plugin/plugin_config_test.dart' as plugin;
@@ -17,7 +16,6 @@ import 'util/test_all.dart' as util;
 
 /// Utility for manually running all tests.
 main() {
-  initializeTestEnvironment();
   defineReflectiveSuite(() {
     context.main();
     dart.main();