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_dictviews.py b/Lib/test/test_dictviews.py
index 7b02ea9eba..280353a3a2 100644
--- a/Lib/test/test_dictviews.py
+++ b/Lib/test/test_dictviews.py
@@ -1,5 +1,4 @@
 import unittest
-from test import support
 
 class DictSetTest(unittest.TestCase):
 
@@ -199,8 +198,5 @@ class DictSetTest(unittest.TestCase):
         self.assertRaises(RuntimeError, repr, d)
 
 
-def test_main():
-    support.run_unittest(DictSetTest)
-
 if __name__ == "__main__":
-    test_main()
+    unittest.main()