10.0.0.1 Reverse record won’t die

I believe this was a bug at one point, which i learned after i setup DNS on my server. Anyway, i have an internal DNS setup on a leopard server 10.5.4. My internal IP bank is of the 192 variety. There still exists a default 0.0.10.in.addr.arpa from the example defaults from setup. There is obviously no forward record for this entry. Is this gonna do me damage? Can i nuke it from named.conf / elsewhere in osx bind config? thanks..