Don't use metaclasses when class decorators can do the job.

Thanks to Nick Coghlan for pointing out that I'd forgotten about class
decorators.

1 files changed, 3 insertions, 2 deletions

diff --git a/Lib/test/test_email/test_headerregistry.py b/Lib/test/test_email/test_headerregistry.py
index 4a57ff1..fc11fba 100644
--- a/Lib/test/test_email/test_headerregistry.py
+++ b/Lib/test/test_email/test_headerregistry.py
@@ -4,7 +4,7 @@ import unittest
 from email import errors
 from email import policy
 from email.message import Message
-from test.test_email import TestEmailBase, Parameterized
+from test.test_email import TestEmailBase, parameterize
 from email import headerregistry
 from email.headerregistry import Address, Group
 
@@ -175,7 +175,8 @@ class TestDateHeader(TestHeaderBase):
         self.assertEqual(m['Date'].datetime, self.dt)
 
 
-class TestAddressHeader(TestHeaderBase, metaclass=Parameterized):
+@parameterize
+class TestAddressHeader(TestHeaderBase):
 
     example_params = {