Well, there is Advanced Hammer, but, other than that, I think you'd have to resort to the attacks of Pokemon themselves for this sort of effect. Removing basic energy isn't quite as devastating as it was back in the early days.
Super Energy Removal discards two energy from one Pokemon if you discard an energy attached to one of your own Pokemon. Energy Removal 2 is the same as Crushing Hammer. Enhanced Hammer and Lost Remover get rid of Special Energy. I can't think of any other trainers that discard energy.