The source project of this merge request has been removed.
games: Remove unigine-superposition.
As of guix commit 72abf72062f0e813efb633e05b42c99c4bc78cff, qtquickcontrols2 has been removed. As unigine-superposition depends on this, the build fails, as does the channel build, impacting all users of guix-gaming. As a temporary measure, the package declaration has been commented out until someone wants to fix the package (it was already broken).