Just delete the beta profile. I did it already and stuck on beta 4, because I don't expect too many betas. Now I'm waiting for final release.
Upgrading every 2 weeks or so was terrible for me. I mentioned, that every iOS beta update I had troubles with Air Pods Pro connectivity. I don't know why, but first connection to my iPhone after iOS beta update takes soooo long. I never mentioned this behaviour on public releases.
Thanks. For some reason I have always done a clean restore after exiting the beta program but it’s a pain to do.