Remove znc from cron

src/freedombone-app-irc

     remove_completion_param install_irc
     remove_completion_param configure_firewall_for_irc
     sed -i '/IRC /d' ${COMPLETION_FILE}
+    sed -i '/znc 2> /d' /etc/crontab
 }
 
 function configure_firewall_for_irc {