Closes #16135: Removal of OS/2 support
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index 6e0c6ee..349b1ac 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -482,7 +482,7 @@
     def test_thread_info(self):
         info = sys.thread_info
         self.assertEqual(len(info), 3)
-        self.assertIn(info.name, ('nt', 'os2', 'pthread', 'solaris', None))
+        self.assertIn(info.name, ('nt', 'pthread', 'solaris', None))
         self.assertIn(info.lock, ('semaphore', 'mutex+cond', None))
 
     def test_43581(self):