This removes inetnum/172.22.119.0_24, which was added as a hack
ages ago by Fritz to add reverse DNS for 172.22.119.128/26, before
it was possible to have reverse DNS for networks smaller than /24.
This also removes dns/fritz.dn42, which I added a while ago to
point ns[34].fritz.dn42 at my nameservers to have working RDNS.