OJS-2.4.7.1 Usage statistics file loader task

I am getting these emails from our journals and would like to turn them off. How and where? I am assuming in the config.inc.php file. When I click on the link I get file not found?

You OJS installation automatically executed and finished this task and you can download the log file here:

http://tli.journalhosting.ucalgary.ca/index.php/index/admin/downloadScheduledTaskLogFile?file=Usagestatisticsfileloadertask-5657868a3ae06-20151126.log

Thanks,
Edward

Have you tried the config.inc.php setting scheduled_tasks_report_error_only?

N.b.: If there are errors in the output, this message is intentional and cannot be suppressed without local code changes, but I think this option should suppress notification-only messages.