Revert "Flag slave-only songs whose album or artist the master has"

This reverts commit 4bae674.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/api/export.go

@@ -63,10 +63,6 @@ func recommendation(m store.Match, v probe.Verdict) string {
 		return "review"
 	case m.Status == store.StatusError:
 		return "fix error"
-	case m.Missing == "album":
-		return "not in master: master has the album"
-	case m.Missing == "artist":
-		return "not in master: master has the artist"
 	}
 	return ""
 }