Remove 'initializeTestEnvironment' from 'analyzer'.

pkg/analyzer/test/src/util/absolute_path_test.dart

Index: pkg/analyzer/test/src/util/absolute_path_test.dart
diff --git a/pkg/analyzer/test/src/util/absolute_path_test.dart b/pkg/analyzer/test/src/util/absolute_path_test.dart
index 75cd31ca8f89ebb346b7bdfa59b60c93140dfefb..42c8449368c88439df52adb405ebefe2b3428c9c 100644
--- a/pkg/analyzer/test/src/util/absolute_path_test.dart
+++ b/pkg/analyzer/test/src/util/absolute_path_test.dart
@@ -8,10 +8,7 @@ import 'package:analyzer/src/util/absolute_path.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../../utils.dart';
-
 main() {
-  initializeTestEnvironment();
   defineReflectiveSuite(() {
     defineReflectiveTests(AbsolutePathContextPosixTest);
     defineReflectiveTests(AbsolutePathContextWindowsTest);