valgrind: code cosmetics

Change-Id: I695c7d40aeb0b0b1e6f8cc0856e5fa5d9d1ce2d1
Reviewed-on: http://codereview.qt.nokia.com/1600
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/valgrind/callgrindvisualisation.h

@@ -77,11 +77,10 @@ signals:
 protected slots:
     void populateScene();
 
-    virtual void mousePressEvent(QMouseEvent *event);
-    virtual void mouseDoubleClickEvent(QMouseEvent *event);
-
 protected:
-    virtual void resizeEvent(QResizeEvent *event);
+    void mousePressEvent(QMouseEvent *event);
+    void mouseDoubleClickEvent(QMouseEvent *event);
+    void resizeEvent(QResizeEvent *event);
 
 private:
     class Private;