Removed fixed dependencies

packages/package_config/test/discovery_test.dart

Index: packages/package_config/test/discovery_test.dart
diff --git a/packages/package_config/test/discovery_test.dart b/packages/package_config/test/discovery_test.dart
index 8807ac497e41a307ae0e2da7630d3594849653b8..897063f52726e5b5f0c88f0417d3d681c5b46c47 100644
--- a/packages/package_config/test/discovery_test.dart
+++ b/packages/package_config/test/discovery_test.dart
@@ -290,6 +290,7 @@ void httpTest(String name, Map description, Future httpTest(Uri directory)) {
             if (fileOrDir == null) {
               request.response.statusCode = 404;
               request.response.close();
+              return;
             }
           }
           request.response.write(fileOrDir);