Below some Javascript code to delete (unlike) all your likes on Twitter. You can run this code in the browser console.
1setInterval(function() {
2 var likeButtons = document.querySelectorAll('[data-testid="unlike"]');
3 for (var i = 0; i < likeButtons.length; i++) {
4 likeButtons[i].click();
5 }
6 window.scrollTo(0, document.body.scrollHeight);
7}, 1000);
You need to stop the script when you see requests failing (429 too many requests) because of the Twitter rate limit. You can stop the script by pressing Ctrl + C in the console. You can do around 500 requests per 15 minutes.