fix: address code review findings

internal/database/external_releases.go

@@ -119,28 +119,6 @@ func SetReleaseIgnored(db *DB, rgid string, ignored bool) error {
 	return nil
 }
 
-// DeleteExternalReleasesByArtist removes all external_release rows for a given artist_id.
-func DeleteExternalReleasesByArtist(db *DB, artistID string) error {
-	_, err := db.Conn().Exec(
-		"DELETE FROM external_releases WHERE artist_id = ?",
-		artistID,
-	)
-	if err != nil {
-		return fmt.Errorf("delete external releases by artist: %w", err)
-	}
-	return nil
-}
-
-// CountExternalReleases returns the total number of external_release rows.
-func CountExternalReleases(db *DB) (int, error) {
-	var count int
-	err := db.Conn().QueryRow("SELECT COUNT(*) FROM external_releases").Scan(&count)
-	if err != nil {
-		return 0, fmt.Errorf("count external releases: %w", err)
-	}
-	return count, nil
-}
-
 // GetExternalReleasesByArtistWithCache returns cached external_release rows for a given artist_id
 // that are within the specified TTL.
 func GetExternalReleasesByArtistWithCache(db *DB, artistID string, ttl time.Duration) ([]ExternalRelease, error) {