merge fct into c'tor; rm fwd decl

GUI/View/Instrument/OffspecDetectorEditor.cpp

@@ -33,11 +33,6 @@ OffspecDetectorEditor::OffspecDetectorEditor(QWidget* parent, OffspecInstrumentI
     connect(collapser, &GroupBoxCollapser::toggled, this,
             [instrument](bool b) { instrument->setExpandDetector(b); });
 
-    createDetectorWidgets();
-}
-
-void OffspecDetectorEditor::createDetectorWidgets()
-{
     while (m_formLayout->rowCount() > 1)
         m_formLayout->removeRow(1);
 

GUI/View/Instrument/OffspecDetectorEditor.h

@@ -17,7 +17,6 @@
 
 #include <QGroupBox>
 
-class Instrument2DItem;
 class OffspecInstrumentItem;
 class QFormLayout;
 
@@ -34,8 +33,6 @@ signals:
     void dataChanged();
 
 private:
-    void createDetectorWidgets();
-
     OffspecInstrumentItem* m_instrument;
     QFormLayout* m_formLayout;
 };