Try this:
$(".ct option[value='X']").each(function() { $(this).remove();});
Or to be more terse, this will work just as well:
$(".ct option[value='X']").remove();
Try this:
$(".ct option[value='X']").each(function() { $(this).remove();});
Or to be more terse, this will work just as well:
$(".ct option[value='X']").remove();