rm unused parameter

GUI/Model/Fit/ParameterTreeItems.cpp

@@ -57,7 +57,7 @@ void ParameterItem::propagateValueToLink(double newValue)
     m_d.set(newValue);
 }
 
-void ParameterItem::linkToMaterial(MaterialItem* material, DoubleDescriptor d)
+void ParameterItem::linkToDescriptor(DoubleDescriptor d)
 {
     m_link = d.path();
     m_d = d;

GUI/Model/Fit/ParameterTreeItems.h

@@ -52,8 +52,8 @@ public:
     //! referring from fit parameters.
     QString link() const;
 
-    //! Links this item to the given value of a material.
-    void linkToMaterial(MaterialItem* material, DoubleDescriptor d);
+    //! Links this item to the given value defined by a descriptor.
+    void linkToDescriptor(DoubleDescriptor d);
 
     //! Links this item to the given session item.
     void linkToSessionItem(SessionItem* item);

GUI/Model/Job/ParameterTreeUtils.cpp

@@ -115,7 +115,7 @@ void GUI::Model::ParameterTreeUtils::createParameterTree(JobItem* jobItem,
             auto* materialValue = materialLabel->model()->insertItem<ParameterItem>(materialLabel);
             materialValue->setDisplayName(d.label);
             materialValue->setValue(QVariant(d.get()));
-            materialValue->linkToMaterial(material, d);
+            materialValue->linkToDescriptor(d);
             if (recreateBackupValues)
                 container->setBackupValue(materialValue->link(), d.get());
         }