Add test coverage for unregistering a key that doesn't exist
Add test coverage for unregistering a key that doesn't exist

mvaled/sentry,zenefits/sentry,mvaled/sentry,jean/sentry,zenefits/sentry,mvaled/sentry,beeftornado/sentry,JamesMura/sentry,alexm92/sentry,alexm92/sentry,fotinakis/sentry,BuildingLink/sentry,JackDanger/sentry,zenefits/sentry,JamesMura/sentry,ifduyue/sentry,JamesMura/sentry,looker/sentry,beeftornado/sentry,zenefits/sentry,mitsuhiko/sentry,gencer/sentry,mvaled/sentry,gencer/sentry,gencer/sentry,BuildingLink/sentry,looker/sentry,ifduyue/sentry,JackDanger/sentry,looker/sentry,daevaorn/sentry,BuildingLink/sentry,jean/sentry,daevaorn/sentry,ifduyue/sentry,nicholasserra/sentry,looker/sentry,mvaled/sentry,gencer/sentry,mitsuhiko/sentry,mvaled/sentry,nicholasserra/sentry,jean/sentry,JamesMura/sentry,fotinakis/sentry,daevaorn/sentry,fotinakis/sentry,BuildingLink/sentry,zenefits/sentry,JackDanger/sentry,daevaorn/sentry,ifduyue/sentry,alexm92/sentry,gencer/sentry,JamesMura/sentry,looker/sentry,jean/sentry,jean/sentry,nicholasserra/sentry,ifduyue/sentry,beeftornado/sentry,fotinakis/sentry,BuildingLink/sentry