Revert "Make sure mac_format is always defined"
Revert "Make sure mac_format is always defined"

This reverts commit 56f9032170d3130c2066e5eebbe18b96398073ca.

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