Remove specific payment gateways when local pickup is select

/**
 * Remove specific payment gateways when local pickup is selected
 */
function mx_lpickup_available_payment_gateways( $gateways ) {
    $chosen_methods = WC()->session->get( 'chosen_shipping_methods' );
    $chosen_shipping_no_ajax = $chosen_methods[0];
        if ( 0 === strpos( $chosen_shipping_no_ajax, 'local_pickup' ) ) :
        // Remove BACS & PayPal payment methods
        unset( $gateways['bacs'] );
        unset( $gateways['paypal'] );
    endif;
    return $gateways;
}
add_filter( 'woocommerce_available_payment_gateways', 'mx_lpickup_available_payment_gateways' );