Removing options from Listbox

Select One option from the list of students to remove .

Tutorial on Listbox Demo of Adding options Demo of Select All options 
<script>
$(document).ready(function() {
$("#b1").click(function(){
var to_remove = $("#student").val();
$("#student option[value= '"+ to_remove + "' ]").remove();
});
});
</script>
<?Php
echo "</div><div class='col-md-4'>";
require "templates/side_for_ad.php";
echo "</div></div>";
require "../../templates/temp1/analytic-only.php";
?>