fix improper arg for tests

Author: markurtz

tests/unit/scheduler/test_constraints.py

@@ -364,9 +364,7 @@ def test_constraint_functionality(self, valid_instances):
                 processed_requests=num_requests,
                 errored_requests=0,
             )
-            request_info = ScheduledRequestInfo(
-                request_id="test", status="completed", created_at=start_time
-            )
+            request_info = ScheduledRequestInfo(request_id="test", status="completed")
 
             action = instance(state, request_info)
             assert isinstance(action, SchedulerUpdateAction)