remove unnecessary trailing newline

Author: mambocab

tests/integration/util.py

@@ -49,4 +49,3 @@ def assert_quiescent_pool_state(test_case, cluster, wait=None):
             test_case.assertEqual(connection.highest_request_id, max(req_ids))
             if PROTOCOL_VERSION < 3:
                 test_case.assertEqual(connection.highest_request_id, connection.max_request_id)
-