fix test_50_server

Author: Erick Tryzelaar

tests/test_50_server.py

@@ -312,8 +312,6 @@ def test_sso_failure_response(self):
         assert not resp.assertion
 
     def test_authn_response_0(self):
-        self.server = Server("idp_conf")
-
         conf = config.SPConfig()
         conf.load_file("server_conf")
         self.client = client.Saml2Client(conf)