Where are installed Notification App?

Hi, I tested 2 applications long time ago and I removed them with the application AppCleaner. But I just see it remains the Notification listed in the Preferences panel.
In the capture, I don’t have anymore the 2 applications ClipGrab and Kyno, and I would like to remove them from there.
As you may use Notifications in your softwares (I don’t), maybe you know where I have to search?
Thank you

On macOS Ventura: Right-click the App in the list → reset and delete
In your macOS Version: press the Delete-key while the App is selected (according to this post)?

Thank you very much for yours answers. I’m under Mojave. I did try Right-clic before post here my question but I didn’t try to simply hit the delete key while the application notification was selected and that did the trick. Pretty simple and limit dangerous. There is not any display dialog to confirm. A person who hit the delete key without wanted to do so remove an application notification.
Thanks again.