LAN interface is now optional.  Allow it to be deleted.
LAN interface is now optional.  Allow it to be deleted.

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