"I don't want notifications" is just a setting in a modern browser. And voila, it's as if notifications did not exist as a feature. I don't understand why you need the feature to not exist; do you feel tempted to leave them enabled if they can be enabled?

I don't like notifications. I never get any notifications requests, unless I'm in a private window trying because some site wouldn't work with adblockers etc. Life can be so simple.