Function removeElement

_benchmarks/sample_echarts.js:14458–14465

* Remove graphic element

(el, props, animatableModel, dataIndex, cb, during)

     */

    function removeElement(el, props, animatableModel, dataIndex, cb, during) {
      // Don't do remove animation twice.
      if (isElementRemoved(el)) {
        return;
      }

      animateOrSetProps('remove', el, props, animatableModel, dataIndex, cb, during);
    }

    function fadeOutDisplayable(el, animatableModel, dataIndex, done) {
      el.removeTextContent();