Issue #21741: Update 147 test modules to use test discovery.

I have compared output between pre- and post-patch runs of these tests
to make sure there's nothing missing and nothing broken, on both
Windows and Linux.  The only differences I found were actually tests
that were previously *not* run.

1 files changed, 1 insertions, 5 deletions

diff --git a/Lib/test/test_pkg.py b/Lib/test/test_pkg.py
index 9883000..532e8fe 100644
--- a/Lib/test/test_pkg.py
+++ b/Lib/test/test_pkg.py
@@ -291,9 +291,5 @@ class TestPkg(unittest.TestCase):
         import t8
         self.assertEqual(t8.__doc__, "doc for t8")
 
-def test_main():
-    support.run_unittest(__name__)
-
-
 if __name__ == "__main__":
-    test_main()
+    unittest.main()