Lethal Casino ATM Fix

This fixes an annoying problem with LethalCasino v1.1.2 where the ATM refuses to set an item's value to exactly 0.

Changes

• Updated ATM to be able to set an item's value to 0 when the amount selected is the exact value of the item.
• Removed incorrect message saying "No reason to use the ATM" since decoupling value from scrap is a completely valid reason.

• Developed for Lethal Company v64a.