That directory was there because min (the package that is in that directory) was first in libre and got some work to remove bad search engines. But later on it was found that its dependency on electron was problematic as electron had freedom issues.

So it was moved in that directory to (1) keep the work being visible (2) to make sure that min was nonfree and that more work was needed.

However bringing back min is unlikely to ever happen as it depends on electron and fixing that would require a huge amount of work (which would probably take years).

So I've just removed that directory for now.