community/audacious-plugins: remove libguess from makedepends

commit eac7214a
Author: Ariadne Conill <ariadne@dereferenced.org>
Date:   Sun Mar 22 08:55:30 2020 +0000

    community/libguess: move to unmaintained
    
    Audacious no longer uses libguess, but instead a stripped down
    internal fork of the libguess engine.
7 jobs for !6332 with community/audacious-plugins in 2 minutes and 32 seconds
merge request