Remove unused signal handler

garage.py

@@ -14,7 +14,6 @@ stateFile = 'www/garage.json'
 
 
 def main():
-    signal(SIGTERM, cleanExit())
     config = ConfigParser()
     config.read('garage.cfg')
     eastPin = config['garage'].getint('east-pin')
@@ -64,12 +63,5 @@ def persistState():
         json.dump(state, file)
 
 
-def cleanExit():
-    def _exit_(signum, frame):
-        sys.exit(0)
-
-    return _exit_
-
-
 if __name__ == '__main__':
     main()