GtkWidget::remove_accelerators
void remove_accelerators(string accel_signal, bool visible_only); 
    
     remove_accelerators()  is a way
     to remove any number of accelerators belonging to the calling widget
     and causing the given signal to be fired.  The second parameter toggles
     whether this should include all such accelerators, or only those
     displayed on the GtkAccelLabel.
    
    
     Note that the accelerators on the widget need to be unlocked before
     this method will work.