message: Change WhitelistController DELETE response to {}
diff: @@ -161,19 +161,17 @@ export class WhitelistController {
  *
  * @apiParam {String} id Whitelist user ID.
  *
  - * @apiSuccess {Boolean} result Confirmation of deletion.
  + * @apiSuccess {Object} result Empty object.
  *
  * @apiSuccessExample {json} Success-Response:
  - * {
  - * result: true
  - * }
  + * {}
  */
  @Delete('/:id')
  @Authorized(['teacher', 'admin'])
  async deleteWhitelistUser(@Param('id') id: string) {
  const whitelistUser = await WhitelistUser.findByIdAndRemove(id);
  await this.deleteUserIfFound(whitelistUser);
  - return {result: true};
  + return {};
  }
  private async deleteUserIfFound(whitelistUser: IWhitelistUser) {
  