Remove unused global var 'hidebackupbeforeupgrade'
Remove unused global var 'hidebackupbeforeupgrade'

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