Fixed #34233 -- Dropped support for Python 3.8 and 3.9.

tests/utils_tests/test_timezone.py

@@ -1,11 +1,7 @@
 import datetime
+import zoneinfo
 from unittest import mock
 
-try:
-    import zoneinfo
-except ImportError:
-    from backports import zoneinfo
-
 from django.test import SimpleTestCase, override_settings
 from django.utils import timezone