Drop redundant connection test

This case is already covered by the authentication test suite

Author: elprans

tests/test_connect.py

@@ -15,13 +15,6 @@
 from asyncpg.connection import _parse_connect_params
 
 
-class TestConnect(tb.ConnectedTestCase):
-    async def test_connect_1(self):
-        with self.assertRaisesRegex(
-                Exception, 'role "__does_not_exist__" does not exist'):
-            await asyncpg.connect(user="__does_not_exist__", loop=self.loop)
-
-
 class TestSettings(tb.ConnectedTestCase):
 
     async def test_get_settings_01(self):