Remove some unused/empty code

src/app/qgsprojectproperties.cpp

@@ -948,18 +948,12 @@ QgsProjectProperties::QgsProjectProperties( QgsMapCanvas *mapCanvas, QWidget *pa
 
   projectionSelectorInitialized();
   restoreOptionsBaseUi();
-  restoreState();
 
 #ifdef QGISDEBUG
   checkPageWidgetNameMap();
 #endif
 }
 
-QgsProjectProperties::~QgsProjectProperties()
-{
-  saveState();
-}
-
 QString QgsProjectProperties::title() const
 {
   return titleEdit->text();
@@ -1704,14 +1698,6 @@ void QgsProjectProperties::srIdUpdated()
   }
 }
 
-void QgsProjectProperties::saveState()
-{
-}
-
-void QgsProjectProperties::restoreState()
-{
-}
-
 void QgsProjectProperties::pbnWMSExtCanvas_clicked()
 {
   QgsRectangle ext = mMapCanvas->extent();

src/app/qgsprojectproperties.h

@@ -51,17 +51,12 @@ class APP_EXPORT QgsProjectProperties : public QgsOptionsDialogBase, private Ui:
 
     void setCurrentPage( const QString & );
 
-    ~QgsProjectProperties() override;
-
     /**
        Every project has a title
      */
     QString title() const;
     void title( QString const &title );
 
-    //! Returns the projection as a WKT string
-    QString projectionWkt();
-
   public slots:
 
     /**
@@ -212,16 +207,6 @@ class APP_EXPORT QgsProjectProperties : public QgsOptionsDialogBase, private Ui:
     void populateStyles();
     void editSymbol( QComboBox *cbo );
 
-    /**
-     * Function to save non-base dialog states
-     */
-    void saveState();
-
-    /**
-     * Function to restore non-base dialog states
-     */
-    void restoreState();
-
     /**
      * Reset the Python macros
      */