rm unused default param

GUI/Model/To/DomainSimulationBuilder.h

@@ -30,7 +30,7 @@ namespace GUI::Model::DomainSimulationBuilder {
 
 std::unique_ptr<ISimulation> createSimulation(const MultiLayerItem* sampleItem,
                                               const InstrumentItem* instrumentItem,
-                                              const SimulationOptionsItem* optionsItem = nullptr);
+                                              const SimulationOptionsItem* optionsItem);
 } // namespace GUI::Model::DomainSimulationBuilder
 
 #endif // BORNAGAIN_GUI_MODEL_TO_DOMAINSIMULATIONBUILDER_H

GUI/View/Script/PythonScriptWidget.h

@@ -35,7 +35,7 @@ public:
 
     void generatePythonScript(const MultiLayerItem* sampleItem,
                               const InstrumentItem* instrumentItem,
-                              const SimulationOptionsItem* optionItem = nullptr,
+                              const SimulationOptionsItem* optionItem,
                               const QString& outputDir = "");
 
 private slots: