gh-125651: Remove duplicated check in test

Author: sevdog

Lib/test/test_uuid.py

@@ -279,7 +279,6 @@ def test_exceptions(self):
         badvalue(lambda: self.uuid.UUID('abc'))
         badvalue(lambda: self.uuid.UUID('123_4567812345678123456781234567'))
         badvalue(lambda: self.uuid.UUID('123_4567812345678123456781_23456'))
-        badvalue(lambda: self.uuid.UUID('123_4567812345678123456781_23456'))
         badvalue(lambda: self.uuid.UUID('1234567812345678123456781234567'))
         badvalue(lambda: self.uuid.UUID('123456781234567812345678123456789'))
         badvalue(lambda: self.uuid.UUID('123456781234567812345678z2345678'))