removing the hook toolbox_content_nav('nav-above')

I have two questions.

I’m looking for a way to remove the hook toolbox_content_nav('nav-above') and am not sure how to address the passed variable.

Also I have some html I’m inserting after the_content via add_filer.

function burn_single_addsocial($content) {
/**
 * On single pages insert social media links
 *
 */
if(is_single()) {
$content .= '<div class="sociallist">
<span class="twitter-inlist">...</span>
<span class="google-inlist">...</span>
<span class="fb-inlist">...</span>
</div>';
}
return $content;
}
add_filter('the_content', 'burn_single_addsocial');

I’d like to move it after the hook toolbox_content_nav('nav-below')
but am not sure how to address the passed variable. Any thoughts.

https://www.ads-software.com/extend/themes/toolbox/