eea730300a added a dedicated section for
Kerberos authentication to kojira.conf. It refers to the canonical
location /etc/kojira/kojira.keytab.
Prior to this change, there were two "kerberos" sections in kojira.conf.
Remove the older stale one, since that refers to the old
"/etc/kojira.keytab" file path, and
f232e49194 defaults to
/etc/kojira/kojira.keytab instead.