To answer the original question, I don't believe that GO-24 would still exist in the TNG era. I certainly cannot see Jean-Luc Picard ever issuing that kind of order, even if it were an option that was still available to him.
In fact, if A Taste of Armageddon were a TNG episode, Geordi, Data and Wesley would have found some Treknobabble-ish way to rescue the landing party that didn't involve Worf using Eminiar Seven for target practice. The final scene would be of Picard in his ready room, looking out his window at the planet, thoughtfully, while the Eminiar-Vendikar computer war still raged below. Prime directive intact, and no blood on any Federation hands.