Block "Mobile Data Turned Off" Notification

I keep getting this one notification from Call Services on an AT&T LG G5 that says "Mobile Data Turned Off." Indeed, mobile data is turned off when I switch from cellular data to a wi-fi connection, but I don't need this notification. How can I stop this notification from appearing? My one thought would be to have an app that blocks notifications that contain that certain text, but I haven't been able to find an app that does this. Notifications from Call Services can't be blocked in Notifications settings.