Disable WooCommerce Mollie payment gateway for pickup shipping

functions.php

<?php
/**
 * There seems to be no option to disable the Mollie gateway based
 * on the selected shipping method. This filter removes
 * Mollie when the shipping method contains 'pickup'.
 *
 * @param array $available_gateways The available gateways.
 *
 * @return array
 */
function prefix_unset_mollie_for_pickup( $available_gateways ) {
    if ( is_admin() ) {
        return $available_gateways;
    }

    if ( ! is_checkout() ) {
        return $available_gateways;
    }

    foreach ( WC()->session->get( 'chosen_shipping_methods' ) as $shipping_method ) {
        if ( strpos( $shipping_method, 'pickup' ) !== false ) {
            foreach ( $available_gateways as $gateway => $gateway_details ) {
                if ( strpos( $gateway, 'mollie_wc_' ) !== false ) {
                    unset( $available_gateways[ $gateway ] );                
                }
            }
        }
    }

    return $available_gateways;
}
add_filter( 'woocommerce_available_payment_gateways', 'prefix_unset_mollie_for_pickup' );