ninja fix invalid syntax in test

Author: TheRealFalcon

tests/integration/simulacron/test_connection.py

@@ -27,7 +27,7 @@
 from cassandra.policies import HostStateListener, RoundRobinPolicy
 
 from tests import connection_class, thread_pool_executor_class
-from tests.util late
+from tests.util import late
 from tests.integration import requiressimulacron, libevtest
 from tests.integration.util import assert_quiescent_pool_state
 # important to import the patch PROTOCOL_VERSION from the simulacron module