Remove duplicate arrangers
@pwood
Submitted by Phillip Wood Link to original bug (#771703)
Description
Some works [1] have an 'arranger' relation and an 'instrument arranger' relation pointing to the same artist. sound-juicer should remove the duplicate from the list of arrangers as instrument arranger is a more specific relation.
[1] https://musicbrainz.org/work/85ab65cb-5218-3c95-bbe0-e095230ecb14
Version: git master