fix: remove unused imports

Author: benoitc

gunicorn/dirty/arbiter.py

@@ -14,7 +14,6 @@
 import fnmatch
 import os
 import signal
-import sys
 import tempfile
 import time
 

tests/ctl/test_handlers.py

@@ -4,13 +4,10 @@
 
 """Tests for control socket command handlers."""
 
-import os
 import signal
 import time
 from unittest.mock import MagicMock, patch
 
-import pytest
-
 from gunicorn.ctl.handlers import CommandHandlers