$new_user_login = apply_filters( 'pre_user_login', sanitize_user( wp_unslash( $_REQUEST['user_login'] ), true ) );
if ( isset( $_POST[ 'noconfirmation' ] ) && is_super_admin() ) {
add_filter( 'wpmu_signup_user_notification', '__return_false' ); // Disable confirmation email
$new_user_login = apply_filters( 'pre_user_login', sanitize_user( wp_unslash( $_REQUEST['user_login'] ), true ) );
if ( isset( $_POST[ 'noconfirmation' ] ) && is_super_admin() ) {
add_filter( 'wpmu_signup_user_notification', '__return_false' ); // Disable confirmation email