Robbery with weapon -- Trial court erred in denying motion for judgment of acquittal on charge of robbery with weapon, which was based on defendant's use of double-barrel of shotgun that had been detached from receiver, stock, and firing mechanism, where state failed to present competent, substantial evidence that defendant actually used the barrel in a way that was likely to cause death or great bodily injury -- Remand with instructions to enter judgment and resentence defendant on lesser included offense of simply robbery.