Switch analyzer_cli to 'package:test'.

pkg/analyzer_cli/test/utils.dart

Index: pkg/analyzer_cli/test/utils.dart
diff --git a/pkg/analyzer_cli/test/utils.dart b/pkg/analyzer_cli/test/utils.dart
index 8e28b937fbc4391af88564ef2fd5824837ce22f0..85fa759e16b72da7fac74e1ae24dd2acf1bc107c 100644
--- a/pkg/analyzer_cli/test/utils.dart
+++ b/pkg/analyzer_cli/test/utils.dart
@@ -9,10 +9,8 @@ import 'dart:mirrors';
 
 import 'package:analyzer/analyzer.dart';
 import 'package:path/path.dart' as pathos;
-import 'package:unittest/unittest.dart';
 
-/// Gets the test directory in a way that works with
-/// package:test and package:unittest.
+/// Gets the test directory in a way that works with package:test
 /// See <https://github.com/dart-lang/test/issues/110> for more info.
 final String testDirectory = pathos.dirname(
     pathos.fromUri((reflectClass(_TestUtils).owner as LibraryMirror).uri));
@@ -41,11 +39,6 @@ String errorsForFile(String contents) {
   });
 }
 
-/// Test env setup (copied from `analyzer/test/utils.dart`).
-void initializeTestEnvironment() {
-  groupSep = ' | ';
-}
-
 /// Creates a temporary directory and passes its path to [fn]. Once [fn]
 /// completes, the temporary directory and all its contents will be deleted.
 ///