Can you provide a screenshot? what version of vRops are you using?
Normally you can just click on the alert and then on actions and disable it in policy. I'm not sure if this one comes from Log Insight or from vRops it self. I case of Log Insight it would be to disable the alert in Log Insight.
vROPS 6.6, unfortunately I can't provide a screenshot. I am also using some Blue Medora packs. It's probably coming from the Cisco pack, but can't figure out how to disable this one specific alert.