bpo-42299: Remove formatter module (GH-23476)

diff --git a/Lib/test/test_sundry.py b/Lib/test/test_sundry.py
index 04e572c..aab074b 100644
--- a/Lib/test/test_sundry.py
+++ b/Lib/test/test_sundry.py
@@ -9,7 +9,7 @@
 
 class TestUntestedModules(unittest.TestCase):
     def test_untested_modules_can_be_imported(self):
-        untested = ('encodings', 'formatter')
+        untested = ('encodings',)
         with warnings_helper.check_warnings(quiet=True):
             for name in untested:
                 try: