EPEL 8 Playground is going away.
One of the steps in that process [1] is to clean out playground from all the various package.cfg files.
I will not be removing the package.cfg files.  I will only remove epel8-playground entry if it is there.  If you, as a package maintainer, want to remove the package.cfg file, you are free to do so.
I have seen too many package.cfg files that have been modified, and I do not feel safe globally removing them.

Note: I will be checking the epel8, epel9, rawhide and f35 branches for package.cfg files.

This will be happening later today.  Let me know if you have any concerns and/or comments.

Troy Dawson

[1] - https://pagure.io/epel/issue/136#comment-774581