How to remove links of a learndash course which has not started yet? without code changes

jQuery(document).ready(function($){
var nost=0;
if($("body").hasClass("single-sfwd-courses")){
toba='';
$("#lessons_list a.notavailable").removeAttr("href");
$("#lessons_list a.notavailable").each(function(){
toba=$(this).parent().parent().attr("class");
toba = toba.replace("lesson post-",'');
toba = toba.replace(" is_not_sample no-topics",'');
toba = toba.replace(" is_not_sample has-topics",'');
$('#learndash_topic_dots-'+toba+" a").removeAttr("href");
});
}
});