Clean up HE.net AAAA backend support.
Clean up HE.net AAAA backend support.

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