Remove noopener & noreferrer on WordPress links

functions.php

/**
 * Remove rel="noopener noreferrer" in TinyMCE links
 *
 * @param  array $init
 * @return array
 */
add_filter('tiny_mce_before_init', function ($init) {
    $init['allow_unsafe_link_target'] = true;
    return $init;
});

/**
 * Prevent rel="noopener noreferrer" from automatically being added on post save.
 *
 * @return void
 */
add_filter('wp_targeted_link_rel', function () {
    return;
});