How to clear cookie with cookie name on from submit?
By setting it to one hour ago time with empty value I managed to make it working according to my requirements. 

function custom_overrides_link_node_form_submit($form, &amp;$form_state) {



  if(isset($_COOKIE['section'])) {

    unset($_COOKIE['section']);
    setcookie("section", '', time() - 3600);
  }

  if(isset($_COOKIE['topic'])) {

    unset($_COOKIE['topic']);
     setcookie("topic", '', time() - 3600);
  }

  if(isset($_COOKIE['language'])) {
     unset($_COOKIE['language']);
     setcookie("language", '', time() - 3600);
  }


}