Removes all filters modifying the rel attribute of targeted links.

function wp_remove_targeted_link_rel_filters() {
	$filters = array(
		'title_save_pre',
		'content_save_pre',
		'excerpt_save_pre',
		'content_filtered_save_pre',
		'pre_comment_content',
		'pre_term_description',
		'pre_link_description',
		'pre_link_notes',
		'pre_user_description',
	);

	foreach ( $filters as $filter ) {
		remove_filter( $filter, 'wp_targeted_link_rel' );
	}
}