Revert "add destructor"

This reverts commit 3eb3a44.

Author: sbvis

src/ScalarSourceAction.cpp

@@ -31,9 +31,6 @@ ScalarSourceAction::ScalarSourceAction(QObject* parent, const QString& title) :
     _offsetAction.setSuffix("px");
 
     const auto scalarSourceChanged = [this]() -> void {
-
-        if (_destroyed) return;
-
         const auto sourceIndex = _pickerAction.getCurrentIndex();
 
         _dimensionPickerAction.setEnabled(sourceIndex >= ScalarSourceModel::DefaultRow::DatasetStart);
@@ -64,11 +61,6 @@ ScalarSourceAction::ScalarSourceAction(QObject* parent, const QString& title) :
     scalarSourceChanged();
 }
 
-ScalarSourceAction::~ScalarSourceAction()
-{
-    _destroyed = true;
-}
-
 ScalarSourceModel& ScalarSourceAction::getModel()
 {
     return _model;

src/ScalarSourceAction.h

@@ -29,9 +29,6 @@ class ScalarSourceAction : public GroupAction
      */
     Q_INVOKABLE ScalarSourceAction(QObject* parent, const QString& title);
 
-    /** Destructor */
-    ~ScalarSourceAction() override;
-
     /** Get the scalar source model */
     ScalarSourceModel& getModel();
 
@@ -91,7 +88,6 @@ class ScalarSourceAction : public GroupAction
     DimensionPickerAction   _dimensionPickerAction;     /** Dimension picker action */
     DecimalAction           _offsetAction;              /** Scalar source offset action */
     DecimalRangeAction      _rangeAction;               /** Range action */
-    bool                    _destroyed = false;
 
     friend class mv::AbstractActionsManager;
 };