I have a Minecraft server I've just started for a few friends. We're playing on hard, and I'm going to set it up so that players spawn with a few minimal items to get them going. Some of them jumped in briefly and logged out after less than 5 minutes last night. How do I reset their progress so that when next they log in, they spawn as if they have never logged in before and have the items I set new players to spawn with?
I.E., how do I make the server forget that they were ever there?