Simplify tests under utils/tests to follow StandardTestSuite convention.

utils/tests/peg/test_config.dart

Index: utils/tests/peg/test_config.dart
diff --git a/utils/tests/peg/test_config.dart b/utils/tests/peg/test_config.dart
deleted file mode 100644
index ba6bf58ad59a2ba221d66eb7eacfd2295309dc58..0000000000000000000000000000000000000000
--- a/utils/tests/peg/test_config.dart
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-#library("peg_test_config");
-
-#import("../../../tools/testing/dart/test_suite.dart");
-
-class PegTestSuite extends StandardTestSuite {
-  PegTestSuite(Map configuration)
-      : super(configuration,
-              "peg",
-              "utils/tests/peg/src",
-              ["utils/tests/peg/peg.status"]);
-}