Cleanup excessive documentation

service.js

@@ -929,7 +929,6 @@ class BesTAService {
    *
    * @param {Node} textAreaEl
    * @param {Node} cloneDiv
-   * @returns {void}
    */
   setCloneDivSize(textAreaEl, cloneDiv) {
     const textAreaRect = textAreaEl.getBoundingClientRect()
@@ -1002,7 +1001,6 @@ class BesTAService {
    * Registers the resize observer for the textarea element
    *
    * @param {Node} textAreaEl
-   * @returns {void}
    */
   registerResizeObserver(textAreaEl) {
     const resizeObserver = new ResizeObserver(() => {