How to suspend "updates available" pop-up on my Mac?

I'm sure it's been asked before.

I've read that you can "slide" it off the screen, but it returns only minutes later.

It's ridiculous that this portion of my screen must always be covered by these "Updates Available: Your computer will restart to complete these updates".

I've also read that if you open the app store, there is an "x" that will stop it from showing up, but that doesn't seem to be the case either.

Maybe it's good to update more than I do, but it's my computer! I'm just tired of having to "slide" the notification off the screen, only for it to return minutes later. Do I really need constant pop-ups from my own computer?

Any help would be appreciated!