Remove "administrator" user from "get_users()" on wordpress.

functions.php

<?php
function remove_administrator($users)
{
    foreach ($users as $key => $user) {
        $cap = reset($user->roles);
        if ($cap === 'administrator') {
            unset($users[$key]);
        }
    }
    return $users;
}
?>

remove_administrator_from_get_users.php

<?php
    $users = get_users(array(
        'orderby' => 'ID',
        'order'   => 'ASC'
    ));
    $users = remove_administrator($users);
    foreach ($users as $user):
?>
    <a href="<?php echo get_author_posts_url($user->ID); ?>">
        <?php $aID = get_the_author_meta('ID', $user->ID); ?>
        <?php echo $user->display_name; ?>
    </a>
<?php endforeach; ?>