mypmpro-deregister-stripe-checkout.php

<?php
/**
 * This recipe will deregister any scripts that contain a Stripe handle
 * on the PMPro Checkout page.
 *
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
function mypmpro_deregister_stripe_checkout() {

	global $wp_scripts, $pmpro_pages;

	if( is_page( $pmpro_pages['checkout'] ) ){

		if( isset( $wp_scripts->registered ) ){

			foreach( $wp_scripts->registered as $key => $val ){

				if( ( $key !== 'pmpro_stripe' && $key !== 'stripe' ) ){
					if( strpos( $key, 'stripe' ) !== false ){
						wp_dequeue_script( $key );
					}
				}

			}

		}

	}

}
add_action( 'wp_print_scripts', 'mypmpro_deregister_stripe_checkout', 999 );