remove variables

Co-authored-by: Stan Ulbrych <stan@python.org>

Author: jyalim

Lib/test/datetimetester.py

@@ -2227,8 +2227,7 @@ def test_strptime_n_and_t_format(self):
 
     def test_strptime_C_format(self):
         # verify cent. 0, zero-padding, modern cent., last supported cent.
-        test_centuries = ('0', '01', '20', '99')
-        for c in test_centuries:
+        for c in ('0', '01', '20', '99'):
             expected_year = int(c) * 100 if int(c) != 0 else 1
             with self.subTest(format_directive="C", century=c):
                 self.assertEqual(