Please drop the fork status of debian/tuxguitar

This package used to be maintained by java team but it has been orphaned for three years now (see Bug #1013777), so I moved it to the debian namespace, which fixes the lintian warning orphaned-package-maintained-in-private-space.

I did that by clicking on the fork button, but then I realized there is no button to undid the fork status, hence this request.

Edit: Alternatively, removing this repo and moving the old repo from "java-team" to "debian" would also work, but in such case please drop me a note so that I can put the missing commits in granular form again.

Thanks.