So, the Game "Rewinside Server" on the Minecraft Series is based of a Minecarft Server, this Server is shut down tho, so the Leaderboard is not in use anymore and can be deleted. I didnt know how to let the mods know about this, so I thought I'd just post this.

Post it in the games forum

@Tutterey - They're a mod of the board.

@Zavlon7 - You can request the leaderboard's deletion in the Support Hub. https://www.speedrun.com/knowledgebase/supporthub

Even if the leaderboard is not in use anymore, you could still keep it up just as an archive of runs.

But yes, in the event you want to get it deleted use the Support Hub like @Walgrey suggested.

I've seen this with some old boards, they change their name from (example game) to (example game archives), and just close down all submissions, listing in the rules that (the board is officially closed, no more submissions will be accepted)