removeListeners method
void
removeListeners()
Implementation
void removeListeners() {
_pollfishClosedListener = null;
_pollfishOpenedListener = null;
_pollfishSurveyNotAvailableListener = null;
_pollfishUserRejectedSurveyListener = null;
_pollfishUserNotEligibleListener = null;
_pollfishSurveyReceivedListener = null;
_pollfishSurveyCompletedListener = null;
}