[FIX] Forgot to remove dropped field from admin site
[FIX] Forgot to remove dropped field from admin site

cateee/fosdem-volunteers,cateee/fosdem-volunteers,jrial/fosdem-volunteers,jrial/fosdem-volunteers,FOSDEM/volunteers,jrial/fosdem-volunteers,FOSDEM/volunteers,FOSDEM/volunteers,FOSDEM/volunteers,cateee/fosdem-volunteers,cateee/fosdem-volunteers,jrial/fosdem-volunteers