fix. didn't remove event listener when invoke destroyed

lib/RtcEngine.native.js

      * @return void
      */
     static destroy() {
+        Agora.removeAllListeners();
         return Agora.destroy();
     }
     /**

src/RtcEngine.native.ts

      * @return void
      */
     public static destroy() {
+        Agora.removeAllListeners();
         return Agora.destroy();
     }