Fix pub tests.

sdk/lib/_internal/pub/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart

Index: sdk/lib/_internal/pub/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart
diff --git a/sdk/lib/_internal/pub/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart b/sdk/lib/_internal/pub/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart
index 01ac8f0524c15c99f2001d47fb79b4261bf0620f..09d41bd9347bbd7102deebb68df7c86cbccf84b4 100644
--- a/sdk/lib/_internal/pub/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart
+++ b/sdk/lib/_internal/pub/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart
@@ -4,8 +4,6 @@
 
 library pub_tests;
 
-import 'package:scheduled_test/scheduled_test.dart';
-
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 import 'utils.dart';
@@ -31,8 +29,6 @@ main() {
       createLockFile('myapp', pkg: ['barback']);
 
       var server = pubServe();
-      server.stderr.expect("[RewriteImport]:");
-      server.stderr.expect(startsWith("Error in myapp|lib/src/unused.dart:"));
       requestShouldSucceed("foo.out", "foo.out");
       endPubServe();
     });