Basically you want to revert that commit is that right?
It's pretty short, as far as I understand, you can edit the files and replace the GREEN text with the RED text (the red text is what was BEFORE) :
https://github.com/mybb/mybb/pull/1973/files
If working with the git repo then maybe undo it in a new branch?
git co -b patched
git revert ffc0551b0e33469729279117fc437890ed1d33cb
It's pretty short, as far as I understand, you can edit the files and replace the GREEN text with the RED text (the red text is what was BEFORE) :
https://github.com/mybb/mybb/pull/1973/files
If working with the git repo then maybe undo it in a new branch?
git co -b patched
git revert ffc0551b0e33469729279117fc437890ed1d33cb