--- a/controls/DurationCellEditor.py	Fri Oct 28 18:59:04 2022 +0800
+++ b/controls/DurationCellEditor.py	Fri Oct 28 19:39:17 2022 +0800
@@ -108,9 +108,6 @@
         self.Table = table
         self.Colname = colname
 
-    def __del__(self):
-        self.CellControl = None
-
     def Create(self, parent, id, evt_handler):
         self.CellControl = DurationCellControl(parent)
         self.SetControl(self.CellControl)