install: remove adhoc dis/connect from services
Remove ldap_connect and ldap_disconnect from services. admin_conn is
just an alias to api.Backend.ldap2 and therefore the connection should
be managed elsewhere.
https://fedorahosted.org/freeipa/ticket/6461
Reviewed-By: Martin Basti <mbasti@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>