Qt: CoverArtLabel: remove unused slot call chain

modules/gui/qt4/components/interface_widgets.cpp

@@ -506,7 +506,6 @@ CoverArtLabel::CoverArtLabel( QWidget *parent, intf_thread_t *_p_i )
     : QLabel( parent ), p_intf( _p_i ), p_item( NULL )
 {
     setContextMenuPolicy( Qt::ActionsContextMenu );
-    CONNECT( this, updateRequested(), this, askForUpdate() );
     CONNECT( THEMIM->getIM(), artChanged( input_item_t * ),
              this, showArtUpdate( input_item_t * ) );
 

modules/gui/qt4/components/interface_widgets.hpp

@@ -245,19 +245,9 @@ private:
     input_item_t *p_item;
 
 public slots:
-    void requestUpdate() { emit updateRequested(); }
-    void update( )
-    {
-        requestUpdate();
-    }
     void showArtUpdate( const QString& );
     void showArtUpdate( input_item_t * );
-
-private slots:
     void askForUpdate();
-
-signals:
-    void updateRequested();
 };
 
 #endif