remove unnecessary hint about cronjob

debian/postinst

@@ -52,7 +52,6 @@ case "$1" in
     # create new daily randomize update cronjob if not exist
     MIN="$(shuf -i 0-59 -n 1)"
     HOUR="$(shuf -i 2-5 -n 1)"
-    echo "Create cron job for daily update"
     cat <<EOF >/etc/cron.d/pveupdate
 # automatically generated - do not edit
 ${MIN} ${HOUR} * * * root /usr/bin/pveupdate