No, but it was being considered.
Leo rejected it because "we found out that in order to deliver spam, we had to give online internet access. This would obviously be impossible in Delta's Economy Class where passengers don't even have room for their laps, much less their laptops."
On the other hand, Leo hinted that Cholula Hot Sauce will soon be spicing up Delta's international flights, "assuming, of course, that you bring your own along and are willing to pay a slight pouring fee."