Remove option to allow trackbacks/pingbacks from post page options

I’m trying to disable all functionality related to pingbacks/trackbacks in WordPress and so far I have this:

add_action( 'pre_ping', 'disable_pingback' );

function disable_pingback( &$links ) {
    foreach ( $links as $l => $link ) {
        if ( 0 === strpos( $link, get_option( 'home' ) ) ) {
            unset( $links[ $l ] );
        }
    }
}

However when I open up the page options and enable discussion, I still see this:

I found this answer (method 2), but it is over 5 years old now and I wasn’t sure if totally replacing the whole section was the best way to do things compatibility wise, so I am asking again…

Is there a cleaner way to accomplish this?

Your code is correct, AFAIK. It will disable the ability to do trackback/pings. It doesn’t remove that option from the screen, as you have noticed.

Not sure how to test that, though. But your code should work to disable the actual process of allowing trackback/ping.

This site might test trackback/pings https://tech.wizbangblog.com/ping.php . No experience with it, so YMMV.