Refs #32365 -- Removed internal uses of utils.timezone.utc alias.

Remaining test case ensures that uses of the alias are mapped
canonically by the migration writer.

tests/utils_tests/test_dateformat.py

@@ -1,15 +1,10 @@
-from datetime import date, datetime, time, tzinfo
+from datetime import date, datetime, time, timezone, tzinfo
 
 from django.test import SimpleTestCase, override_settings
 from django.test.utils import TZ_SUPPORT, requires_tz_support
 from django.utils import dateformat, translation
 from django.utils.dateformat import format
-from django.utils.timezone import (
-    get_default_timezone,
-    get_fixed_timezone,
-    make_aware,
-    utc,
-)
+from django.utils.timezone import get_default_timezone, get_fixed_timezone, make_aware
 
 
 @override_settings(TIME_ZONE="Europe/Copenhagen")
@@ -71,7 +66,7 @@ class DateFormatTests(SimpleTestCase):
         )
 
     def test_epoch(self):
-        udt = datetime(1970, 1, 1, tzinfo=utc)
+        udt = datetime(1970, 1, 1, tzinfo=timezone.utc)
         self.assertEqual(format(udt, "U"), "0")
 
     def test_empty_format(self):
@@ -216,7 +211,7 @@ class DateFormatTests(SimpleTestCase):
 
     @requires_tz_support
     def test_e_format_with_named_time_zone(self):
-        dt = datetime(1970, 1, 1, tzinfo=utc)
+        dt = datetime(1970, 1, 1, tzinfo=timezone.utc)
         self.assertEqual(dateformat.format(dt, "e"), "UTC")
 
     @requires_tz_support

tests/utils_tests/test_feedgenerator.py

@@ -2,7 +2,7 @@ import datetime
 
 from django.test import SimpleTestCase
 from django.utils import feedgenerator
-from django.utils.timezone import get_fixed_timezone, utc
+from django.utils.timezone import get_fixed_timezone
 
 
 class FeedgeneratorTests(SimpleTestCase):
@@ -144,4 +144,7 @@ class FeedgeneratorTests(SimpleTestCase):
         for use_tz in (True, False):
             with self.settings(USE_TZ=use_tz):
                 rss_feed = feedgenerator.Rss201rev2Feed("title", "link", "description")
-                self.assertEqual(rss_feed.latest_post_date().tzinfo, utc)
+                self.assertEqual(
+                    rss_feed.latest_post_date().tzinfo,
+                    datetime.timezone.utc,
+                )