Function off

modular/sortable.core.esm.js:134–136

(el, event, fn)

  el.addEventListener(event, fn, !IE11OrLess && captureMode);
}
function off(el, event, fn) {
  el.removeEventListener(event, fn, !IE11OrLess && captureMode);
}
function matches( /**HTMLElement*/el, /**String*/selector) {
  if (!selector) return;
  selector[0] === '>' && (selector = selector.substring(1));