Stop making Elemental Stomp uncurl from spin

Up until fairly close to release, the Elemental Stomp kept the player curled if they had jumpspin, or forced a curl ala the Attraction Shield's homing attack if they didn't. This was changed to try and make it more obvious that the stomp couldn't break Fang/Amy path bustable floors, but this change neglected to consider that the maps already had several item layout setups which suggested stomp was necessary to break monitors underneath THZ1/2's slime, but was unable to (and it didn't do enough to dissuade the idea anyways).