Remove unused function _get_row_start_time

app/playlists.py

@@ -1220,19 +1220,6 @@ class PlaylistTab(QTableWidget):
         else:
             return int(plr_id)
 
-    def _get_row_start_time(self, row_number: int) -> Optional[datetime]:
-        """Return row_number start time as string or None"""
-
-        start_time_item = self.item(row_number, START_TIME)
-        if not start_time_item:
-            return None
-
-        try:
-            return datetime.strptime(start_time_item.text(),
-                                     Config.NOTE_TIME_FORMAT)
-        except ValueError:
-            return None
-
     def _get_row_title(self, row_number: int) -> Optional[str]:
         """Return title on this row_number or None if none"""