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, 5 deletions

diff --git a/Lib/test/test_msilib.py b/Lib/test/test_msilib.py
index ccdaec7..8ef334f 100644
--- a/Lib/test/test_msilib.py
+++ b/Lib/test/test_msilib.py
@@ -1,7 +1,7 @@
 """ Test suite for the code in msilib """
 import unittest
 import os
-from test.support import run_unittest, import_module
+from test.support import import_module
 msilib = import_module('msilib')
 
 class Test_make_id(unittest.TestCase):
@@ -39,8 +39,5 @@ class Test_make_id(unittest.TestCase):
             msilib.make_id(".s\x82o?*+rt"), "_.s_o___rt")
 
 
-def test_main():
-    run_unittest(__name__)
-
 if __name__ == '__main__':
-    test_main()
+    unittest.main()