fix: sn fixed

lib/dborm/dborm.go

@@ -1829,10 +1829,5 @@ func XormGetNESN(neType, neID string) (string, error) {
 		Cols("serial_num").
 		Limit(1).
 		Get(&SN)
-	if err != nil {
-		log.Error("Failed to get table ne_state:", err)
-		return SN, err
-	}
-
-	return SN, nil
+	return SN, err
 }