Fix analyzer hints and warnings in test/.

test/global/binstubs/removes_even_if_not_in_pubspec_test.dart

Index: test/global/binstubs/removes_even_if_not_in_pubspec_test.dart
diff --git a/test/global/binstubs/removes_even_if_not_in_pubspec_test.dart b/test/global/binstubs/removes_even_if_not_in_pubspec_test.dart
index 23261143c8928d884f11e8c6c2e7721eea8ebe4a..ea2a5288145b4cb9ff1d26b1d062edb1437bade9 100644
--- a/test/global/binstubs/removes_even_if_not_in_pubspec_test.dart
+++ b/test/global/binstubs/removes_even_if_not_in_pubspec_test.dart
@@ -2,11 +2,8 @@
 // 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.
 
-import 'package:scheduled_test/scheduled_test.dart';
-
 import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
-import 'utils.dart';
 
 main() {
   integration("removes all binstubs for package", () {