I know how to copy & paste. I just don’t remember what repo this is or why it was added in the first place.
I just want to remove it if it isn’t necessary. The only thing I was interested in doing was following this
guide → Whonix ™ Packages for Debian Hosts and Whonix ™ Host Enhancements; but I seem to have confused things.
Here is the output of the files you mentioned:
/etc/apt/sources.list: (empty file)
debian.list debian.list.dpkg-old derivative.list qubes-r4.list whonix.list
the output of cat whonix.list is:
deb https://deb.whonix.org bullseye main contrib non-free