#8474: fix duplicate test in test_email.

Lib/email/test/test_email.py

@@ -552,11 +552,6 @@ class TestEncoders(unittest.TestCase):
         msg.set_charset('us-ascii')
         eq(msg['content-transfer-encoding'], '7bit')
 
-    def test_default_cte(self):
-        eq = self.assertEqual
-        msg = MIMEText('hello world')
-        eq(msg['content-transfer-encoding'], '7bit')
-
     def test_default_cte(self):
         eq = self.assertEqual
         # With no explicit _charset its us-ascii, and all are 7-bit