virtnbdbackup: drop target specific python3 version instead use generic v3 one.

helpers/make-virtnbdbackup

 #!/bin/sh
 #
-#    Copyright (C) 2023 Luis Guzmán <ark@switnet.org>
+#    Copyright (C) 2024 Luis Guzmán <ark@switnet.org>
 #
 #    This program is free software; you can redistribute it and/or modify
 #    it under the terms of the GNU General Public License as published by
@@ -23,9 +23,5 @@ REPOKEY=6ED0E7B82643E131
 BACKPORTS=true
 . ./config
 
-# Set on a supported python version
-sed -i "s|python3.11|python3.10|" debian/control
-sed -i "/PYBUILD_INTERPRETERS/s|python3.11|python3.10|" debian/rules
-
 changelog "Imported into Trisquel"
 package