if ( false !== ( $key = array_search( $user->user_login, $super_admins ) ) ) {
unset( $super_admins[$key] );
update_site_option( 'site_admins', $super_admins );
if ( false !== ( $key = array_search( $user->user_login, $super_admins ) ) ) {
unset( $super_admins[$key] );
update_site_option( 'site_admins', $super_admins );