_removePoller (pollerId) {
    if (this._pollers[pollerId]) {
      this._logger.debug(`stopping and removing poller ${pollerId}`)
      this._pollers[pollerId].stop()
      delete this._pollers[pollerId]
    }
  }
Remove a poller associated with a deleted or modified externalsecret.
@param {String} pollerId - ID of the poller to remove.