Ask HN: Does anyone what a "RiotCache.dat" file was doing in my EFI partition?

About a year ago, I was installing Arch Linux to try it out on my laptop but I was running into space issues on my EFI partition. When I went to take a look, I found a "RiotCache.dat" file.

I subsequently made this post [1], but I never got an answer as to what that file was doing there.

[1] https://old.reddit.com/r/linux_gaming/comments/1il3hxp