My network topology has changed and I'd like to remove a reverse DNS
zone that is no longer applicable. When I try to delete the zone, I get
an error "Not allowed on non-leaf entry." The only entry in the zone is
the "@" record name with two NS entries corresponding to my two FreeIPA
name servers. When I try to delete the "@" record, I get another error
"invalid 'del_all': Zone record '@' cannot be deleted."
I seem to be caught between these two safety checks. What is the proper
way to completely remove a reverse DNS zone from FreeIPA
(freeipa-server-4.13.1-13.fc44.x86_64)?