--- a/controls/FolderTree.py	Fri Oct 28 13:06:52 2022 +0800
+++ b/controls/FolderTree.py	Fri Oct 28 14:07:13 2022 +0800
@@ -23,11 +23,9 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 
-
 import os
 
 import wx
-from six.moves import xrange
 
 from util.BitmapLibrary import GetBitmap