Run in dev console to clear all "deploy notifications" in your Netlify site

clear-netlify-notifications.js

const sleep = (ms = 0) => new Promise((resolve) => setTimeout(resolve, ms));

const notifications = document.querySelectorAll("[aria-label*='Options']");

for (const notification of notifications) {
  notification.click();

  await sleep(10);

  notification.nextElementSibling
    .querySelector("li:nth-child(2) button")
    .click();

  await sleep(10);

  document.querySelector(".modal form button[type='submit']").click();

  await sleep(1000);
}

When you create a new Netlify site, it enables a bunch of email and webhook notifications that are annoying (imo) and take a few minutes to clear manually.

Go to app.netlify.com/sites/YOURSITE/configuration/notifications#emails-and-webhooks and run this script in your dev console, and it will automatically clear all of them in a few seconds.