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, 2 insertions, 16 deletions

diff --git a/Lib/test/test_pyexpat.py b/Lib/test/test_pyexpat.py
index c233bc1..08e95c6 100644
--- a/Lib/test/test_pyexpat.py
+++ b/Lib/test/test_pyexpat.py
@@ -10,7 +10,7 @@ import traceback
 from xml.parsers import expat
 from xml.parsers.expat import errors
 
-from test.support import sortdict, run_unittest
+from test.support import sortdict
 
 
 class SetAttributeTest(unittest.TestCase):
@@ -708,19 +708,5 @@ class ForeignDTDTests(unittest.TestCase):
         self.assertEqual(handler_call_args, [("bar", "baz")])
 
 
-def test_main():
-    run_unittest(SetAttributeTest,
-                 ParseTest,
-                 NamespaceSeparatorTest,
-                 InterningTest,
-                 BufferTextTest,
-                 HandlerExceptionTest,
-                 PositionTest,
-                 sf1296433Test,
-                 ChardataBufferTest,
-                 MalformedInputTest,
-                 ErrorMessageTest,
-                 ForeignDTDTests)
-
 if __name__ == "__main__":
-    test_main()
+    unittest.main()