Delete an account

My mail account has been shut Downs so i can logg in to My old family tree,, as i have no. mail or passform for it anymore i Aldo tried with My Facebook .. There for i Woolld like to remove it. With loggenhet in to it with My fb but it opens à new family tree...hela med remove me fr.o.m. My olf family tree so i can reastart one'!! Tank you