Remove 'initializeTestEnvironment' from 'analyzer'.

pkg/analyzer/test/generated/utilities_dart_test.dart

Index: pkg/analyzer/test/generated/utilities_dart_test.dart
diff --git a/pkg/analyzer/test/generated/utilities_dart_test.dart b/pkg/analyzer/test/generated/utilities_dart_test.dart
index 580845beae7097fe01711e90c2c220563dd9fe4b..1917b16b005d83430d77d01e271dabefcedadf84 100644
--- a/pkg/analyzer/test/generated/utilities_dart_test.dart
+++ b/pkg/analyzer/test/generated/utilities_dart_test.dart
@@ -8,10 +8,7 @@ import 'package:analyzer/src/generated/utilities_dart.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../utils.dart';
-
 main() {
-  initializeTestEnvironment();
   defineReflectiveSuite(() {
     defineReflectiveTests(ResolveRelativeUriTest);
   });