App to automatically delete notifications

I have a couple of apps that I like to receive notifications from as Banners. They pop up, I read them out of the corner of my eye and they disappear again. The problem is that they are quite heavy on the number of notifications that are sent, so I end up with an overloaded notifications tab.

Does anybody know an app that can automatically delete notifications?

I'm running Sierra.

 

Not exactly what I was thinking, but that will definitely do. I'm blind as a bat.

Thanks.