Why don't using shorter method, or it not a good option?

    button.addEventListener('click', (e) => {
        ul.removeChild(li);
    })

const form = document.getElementById('registrar');
const input = form.querySelector('input');
const ul = document.getElementById('invitedList');


form.addEventListener('submit', (e) => {
  e.preventDefault();
  const text = input.value;
  input.value = '';
  const li = document.createElement('li');
  li.textContent = text;
  const label = document.createElement('label');
  label.textContent = 'Confirmed';
  const checkbox = document.createElement('input');
  checkbox.type = 'checkbox';
    const button = document.createElement('button');
    button.innerText = 'Remove';
  label.appendChild(checkbox);
  li.appendChild(label);
  li.appendChild(button);
  ul.appendChild(li);
    button.addEventListener('click', (e) => {
        ul.removeChild(li);
    })
});

ul.addEventListener('change', (e) => {
  const checkbox = event.target;
  const checked = checkbox.checked;
  const listItem = checkbox.parentNode.parentNode;

  if (checked) {
    listItem.className = 'responded';
  } else {
    listItem.className = '';
  }
});