Fix displaying variable values on vertical line

Hello,

Values of variables displayed next to the red vertical line are always 0:

This PR fixes this bug:

src/render/Hook_event.cpp

@@ -393,8 +393,6 @@ void Hook_event::mouseReleaseEvent(QMouseEvent * event){
         && ((_new_mouse_y-_mouse_y) < _minimum_distance_for_selection)){/* selection is too thin to draw a box. So, it must be a user click to display entity information */
         //start the timer to catch a click or double click
         _timer->start(getTimeClick());
-                double d =render_to_trace_x( screen_to_render_x(_mouse_x));
-        _core->launch_action(_core->_STATE_UPDATE_VARVALUES, &d);//update the value of the variables to display
 
         _mouse_pressed                  = false;
         _mouse_pressed_inside_container = false;