remove test_gunicorn_arbiter_with_application

tests/test_cli.py

@@ -1,10 +1,8 @@
 from unittest.mock import patch
 
-import gunicorn.arbiter
 from click.testing import CliRunner
 
 import teufa.cli
-from teufa.server import Application
 
 
 @patch("teufa.server.Application.run")
@@ -31,8 +29,3 @@ def test_cli_server_dev(MockApplication):
         }
     )
     MockApplication.return_value.run.assert_called_once_with()
-
-
-def test_gunicorn_arbiter_with_application():
-    arbiter = gunicorn.arbiter.Arbiter(Application())
-    arbiter.stop()