Mine Treasure

MAJOR BUG FIX!

Fix: There have been overall complaints about lag when using Mine Treasure when the server is performing a save, this was due to something I was not aware of, but apparently killing an entity with a score will not actually remove them from scoreboard, causing many of them to rack up scoreboard.dat on servers. This will make the server lag immensely after playing with Mine Treasure for a few days. This update fixes this issue by resetting scoreboard on the entity that is being killed.