The Columbiana Centre Chick-fil-A removed the post from their Facebook page. However, it was there on the 19th, as evidenced by this Google
cache of their page.
I can't say with absolute certainty why it's not there anymore but I can say that I saw a notice for a franchise in Virginia while it was still up. It had attracted
lots of nasty comments (from people who apparently didn't realize 19 < 20).
It's reasonable to assume Columbiana Centre either also had nasty comments on that post (after the 23rd when news of Henson's decision went viral) or that they thought it, too, would be inundated with criticism.