I have to exclude first id entry, and display the relaxation on my small wordpress, I have not used sql before.

$all_users_id = $wpdb->get_col( $wpdb->prepare("SELECT $wpdb->users.ID FROM $wpdb->users ORDER BY %s ASC", $sort ));

One of the ways is always to use something similar to

SELECT  *
FROM    Table
WHERE   ID > (SELECT MIN(ID) FROM Table)

I'm not acquainted with Wordpress, but do this:

$all_users_id = $wpdb->get_col( $wpdb->prepare("SELECT $wpdb->users.ID FROM $wpdb->users WHERE $wpdb->users.ID NOT IN (SELECT MIN($wpdb->users.ID) FROM $wpdb->users) ORDER BY %s ASC", $sort ));
$all_users_id = $wpdb->get_col( $wpdb->prepare("SELECT `$wpdb->users.ID` FROM `$wpdb->users` WHERE `$wpdb->users.ID` != 1 ORDER BY %s ASC", $sort ));

The query used:

SELECT `$wpdb->users.ID`
FROM `$wpdb->users`
WHERE `$wpdb->users.ID` != 1
ORDER BY %s ASC

Easy and quick... Without sub-querys! :)

Whether it's a mysql db then make use of the limit clause:

SELECT `$wpdb->users.ID`
FROM `$wpdb->users`
ORDER by $sort ASC
LIMIT 1,9999999

C.