Remove not implemented method

src/editdlgtypes.h

@@ -86,7 +86,6 @@ private Q_SLOTS:
     void            setColours(const QColor& fg, const QColor& bg);
 
 private:
-    void            setSoundPicker();
 
     // Display alarm options
     ComboBox*           mTypeCombo;

src/lib/spinbox2.h

@@ -286,7 +286,6 @@ private:
     bool             eventFilter(QObject*, QEvent*) override;
     void             spinboxResized(QResizeEvent*);
     void             setUpdown2Size();
-    void             setShiftStepping(bool on);
 
     // Visible spin box class.
     // Declared here to allow use of mSpinBox in inline methods.

src/preferences.h

@@ -104,7 +104,6 @@ private Q_SLOTS:
 
 private:
     Preferences();         // only one instance allowed
-    static int              startOfDayCheck(const QTime&);
     static void             setNotify(const QString& messageID, bool notify);
     static bool             notifying(const QString& messageID);