static/ext/src/util/CSS.js
function(id) {
            var existing = doc.getElementById(id);
            if (existing) {
                existing.parentNode.removeChild(existing);
            }
        }
function(id) {
            var existing = doc.getElementById(id);
            if (existing) {
                existing.parentNode.removeChild(existing);
            }
        }
Removes a style or link tag by id
@param {String} id The id of the tag