Disable database backup

Hi mates,
how to disable database backup? I have already a script that do the same job.
I have tried inserting the parameter G_CRON_BKP_ENABLED to no in the bluecherry db but the backup is launched anyway.
No way to find a cron job for the user in the crontab…
Where the hell is it? It is filling my email of errors…

Thanks a lot

found…thanks…it was under /etc/cron.d/bluecherry