contrib: cddb: remove CDDB package

The CDDB databse from freedb.videolan.org doesn't reply anymore (due to MusicBrainz ?). freedb.org is dead and gnudb.org is empty.

CDDB was a fallback in case the MusicBrainz query didn't find any match but we're just wasting time doing a query that will never provide any good answer anymore.

Deprecates !526 (merged) if this is the preferred solution.

On top of !5641 (merged)