Removes the Primary Registrant's email address from the hidden input that's passed to the Stripe billing form modal. Event Espresso 4 + Stripe add-on.

stripe_remove_email.php

<?php
//* Please do NOT include the opening php tag, except of course if you're starting with a blank file

add_action( 'wp_enqueue_scripts', 'my_ee_remove_stripe_predefined_email', 11 );
function my_ee_remove_stripe_predefined_email() {
  wp_add_inline_script( 
    'single_page_checkout',
    'jQuery( document ).one( "ajaxStop", function() {
      jQuery("#ee-stripe-transaction-email").val("");
    } );'
  );
}