tests: small code cleanup

rhodecode/tests/plugin.py

@@ -903,10 +903,7 b' def pr_util(backend, request, config_stu'
     """
 
     util = PRTestUtility(backend)
-
-    @request.addfinalizer
-    def cleanup():
-        util.cleanup()
+    request.addfinalizer(util.cleanup)
 
     return util