So I have an ubuntu box running aide and every so often I pick a few messages like this:

removed: /dev/char/10:55
removed: /dev/
removed: /dev/
removed: /dev/btrfs-control
Now, I do not run btrfs, so I see not reason to find a btrfs-control file being around. I thought the package btrfs-tools was related to this file (i.e. it created it or something), but it is not installed. So, who is creating the file and why?