Remove unnecessary 'function' in jsdoc blocks

src/ol/events/Event.js

@@ -41,7 +41,6 @@ class Event {
 
   /**
    * Stop event propagation.
-   * @function
    * @api
    */
   preventDefault() {
@@ -50,7 +49,6 @@ class Event {
 
   /**
    * Stop event propagation.
-   * @function
    * @api
    */
   stopPropagation() {

src/ol/events/Target.js

@@ -76,7 +76,6 @@ class Target extends Disposable {
    *     import("./Event.js").default|string} event Event object.
    * @return {boolean|undefined} `false` if anyone called preventDefault on the
    *     event object or if any of the listeners returned false.
-   * @function
    * @api
    */
   dispatchEvent(event) {

src/ol/events/condition.js

@@ -67,7 +67,6 @@ export const focus = function(event) {
  *
  * @param {import("../MapBrowserEvent.js").default} mapBrowserEvent Map browser event.
  * @return {boolean} True.
- * @function
  * @api
  */
 export const always = TRUE;
@@ -106,7 +105,6 @@ export const mouseActionButton = function(mapBrowserEvent) {
  *
  * @param {import("../MapBrowserEvent.js").default} mapBrowserEvent Map browser event.
  * @return {boolean} False.
- * @function
  * @api
  */
 export const never = FALSE;