DNS Locations: cleanup of bininstance
We don't need anymore:
* sample of zone file - list of all records required by IPa will be
provided
* NTP related params - DNS records will be updated automatically,
based on LDAP values
* CA related params - DNS records will be updated automatically based
* on LDAP values
https://fedorahosted.org/freeipa/ticket/2008
Reviewed-By: Petr Spacek <pspacek@redhat.com>