Thank you for the response. While the solution in the documentation wasn’t exactly what I was looking for to focus specifically on the Brave repo, it got me on the right track. I was able to target the repo specifically with:
sudo rm /etc/yum.repos.d/brave-browser.repo
After a restart it appears to have removed it, it no longer appears during updates, and my computer didn’t explode. I believe it is fixed thanks to your help.