baloney, there are tons for sale right now https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2487249.m570.l1311&_nkw=aunt+jemima+syrup+bottles&_sacat=0
You will notice that none of the Aunt Jemima items use that name in the listing text - it’s all just ‘pancake syrup’.
This must be a trademark matter, though I don’t know why they care at this point; and I guess the image doesn’t matter because that’s a different legal issue.