style: Unused variable

Author: caffeine-addictt

src/thread/thread.py

@@ -648,7 +648,7 @@ def start(self) -> None:
 
 
 # Handle abrupt exit
-def service_shutdown(signum, frame):
+def service_shutdown(signum, _):
     if Settings.GRACEFUL_EXIT_ENABLED:
         if Settings.VERBOSITY > 'quiet':
             print('\nCaught signal %d' % signum)