How to remove an app in Mac's notification's center?

[NTNL]

I have noticed that even when I uninstall an application completely, the app is still on the list in System Preferences > Notifications...

How do I remove an app completely from that list?

 

[simsaladimbamba]

Which method do you use to uninstall applications completely?

Best way to FULLY DELETE a program without the need of any additional, inefficient applications

Visual presentation of the steps outlined in above link: