Remove no longer used dhclient -r option.
Remove no longer used dhclient -r option.

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