Fix channel preferences can't be deleted

sohstationviewer/view/channel_prefer_dialog.py

@@ -375,8 +375,9 @@ class ChannelPreferDialog(OneWindowAtATimeDialog):
         (soh_list_name_item, data_type_combobox,
          soh_list_item, clear_widget) = self.get_row(row_idx)
         if soh_list_item.text().strip() != "":
-            msg = ("Are you sure you want to delete the SOH channel list of  "
-                   "row #%s?" % (row_idx + 1))
+            msg = ("Are you sure you want to delete the SOH channel list "
+                   f"{soh_list_name_item.text()} at soh_list_name_item row "
+                   f"#{row_idx + 1}?")
             result = QtWidgets.QMessageBox.question(
                 self, "Confirmation", msg,
                 QtWidgets.QMessageBox.Yes | QtWidgets.QMessageBox.No)
@@ -561,7 +562,6 @@ class ChannelPreferDialog(OneWindowAtATimeDialog):
             self.parent.pref_soh_list = []
             self.parent.pref_soh_list_name = ''
             self.parent.pref_soh_list_data_type = 'Unknown'
-            return True
 
         ret = trunc_add_db('ChannelPrefer', sql_list)
         if ret is not True: