Remove unnecessary blank line in dag_fixed_point.py

Author: Hadar01

qiskit/transpiler/passes/utils/dag_fixed_point.py

@@ -36,5 +36,5 @@ def run(self, dag: DAGCircuit) -> None:
         else:
             fixed_point_reached = self.property_set["_dag_fixed_point_previous_dag"] == dag
             self.property_set["dag_fixed_point"] = fixed_point_reached
-            
+
         self.property_set["_dag_fixed_point_previous_dag"] = deepcopy(dag)