JSFiddle - React, Tailwind, and code Playground

HTML

<div class="simplecheckout-button-right">
  <input type="submit" value="Подтверждение заказа" class="btn btn-primary button" data-payment-button="true">
</div>

JavaScript

const simplecheckoutButtonRight = document.querySelectorAll(".simplecheckout-button-right");

simplecheckoutButtonRight.forEach(el => {
  const btn = el.querySelector(".button");
  btn.addEventListener("click", function() {
    this.remove();
  });
});