Fix imports

sohstationviewer/model/reftek/reftek.py

@@ -7,8 +7,7 @@ from typing import Tuple, List, Union
 import traceback
 import numpy as np
 
-from sohstationviewer.model.reftek.from_rt2ms import (
-    core, soh_packet)
+from sohstationviewer.model.reftek.from_rt2ms import core, soh_packet
 from sohstationviewer.model.reftek.log_info import LogInfo
 from sohstationviewer.model.data_type_model import (
     DataTypeModel, ThreadStopped, ProcessingDataError)