clean up old lock files for modem ports if a stale is left behind
clean up old lock files for modem ports if a stale is left behind

ptorsten/pfsense,NewEraCracker/pfsense,dennypage/pfsense,dennypage/pfsense,phil-davis/pfsense,pfsense/pfsense,dennypage/pfsense,phil-davis/pfsense,ch1c4um/pfsense,phil-davis/pfsense,NewEraCracker/pfsense,BlackstarGroup/pfsense,phil-davis/pfsense,ptorsten/pfsense,BlackstarGroup/pfsense,ch1c4um/pfsense,jxmx/pfsense,ch1c4um/pfsense,ptorsten/pfsense,NewEraCracker/pfsense,BlackstarGroup/pfsense,dennypage/pfsense,BlackstarGroup/pfsense,jxmx/pfsense,pfsense/pfsense,NOYB/pfsense,pfsense/pfsense,ch1c4um/pfsense,brunostein/pfsense,pfsense/pfsense,brunostein/pfsense,NOYB/pfsense,NewEraCracker/pfsense,jxmx/pfsense,NOYB/pfsense,brunostein/pfsense