This is an article for the premium version.

Only keeping open days in the list is possible by adding a piece of PHP code to your theme’s functions.php file:

add_filter('mbhi_hours_entry','remove_closed_entries');
function remove_closed_entries($entry){
    if($entry->hours === __('Closed','mabel-business-hours-indicator-pro'))
        return false;

    return $entry;
}