systemd: remove ceph-create-keys from presets

ceph-create-keys unit file was removed here:

* 8bcb4646b6
* dc5fe8d415

As a consequence the systemctl preset command now fails to run since the
unit does not exist anymore. Due to the redirection in /dev/null we
don't know what's happening.

Ultimately the mon unit doesn't get enabled and the mon service won't
start after reboot.
Removing the old/non-existent unit makes the command succeed now.

Signed-off-by: Sébastien Han <seb@redhat.com>

ceph.spec.in

@@ -1190,7 +1190,7 @@ fi
 %post mon
 %if 0%{?suse_version}
 if [ $1 -eq 1 ] ; then
-  /usr/bin/systemctl preset ceph-create-keys@\*.service ceph-mon@\*.service ceph-mon.target >/dev/null 2>&1 || :
+  /usr/bin/systemctl preset ceph-mon@\*.service ceph-mon.target >/dev/null 2>&1 || :
 fi
 %endif
 %if 0%{?fedora} || 0%{?rhel}