How to stop openhab to logging in /var/log/syslog

How to stop openhab to logging in /var/log/syslog

I wont to make logs only in /var/log/openhab/openhab.log and /var/log/openhab/events.log

I try with this tutorial but without success

http://www.thedumbterminal.co.uk/posts/2005/06/stopping_an_application_from_logging_to_syslog.html