Remove specific ppp fields if the interface is not a ppp anymore this unbreaks the GUI in certain cases.
Remove specific ppp fields if the interface is not a ppp anymore this unbreaks the GUI in certain cases.

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