Please modify the following line in /usr/share/nvpmodel_indicator/nvpmodel_indicator.py on your board to remove the notification for OC event.
- events = [oc.OcEvent(), thermal.ThermalThrottleAlert(THROTTLE_ALERT), thermal.ThermalThrottleAlert(HOT_SURFACE_ALERT)]
+ events = [thermal.ThermalThrottleAlert(THROTTLE_ALERT), thermal.ThermalThrottleAlert(HOT_SURFACE_ALERT)]