修复打包写入plc数据座椅数据重复的bug

services/jit/implments/PackOrder.service.impl.go

@@ -2228,7 +2228,7 @@ func (impl *PackOrderServiceImplement) MakeUpSeatData(session *xorm.Session, use
 	}
 	_ = session.Commit()
 	timeStr := time.Now().Format("060102")
-	seatData += seatData + timeStr + num
+	seatData = seatData + timeStr + num
 	return seatData, nil
 }