esp_wifi_sta_itwt_teardown() function

- ESP_OK: succeed - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init - ESP_ERR_WIFI_NOT_STARTED: WiFi is not started by esp_wifi_start - ESP_ERR_WIFI_CONN: WiFi internal error, station or soft-AP control block wrong - ESP_ERR_WIFI_NOT_CONNECT: The station is in disconnect status - ESP_ERR_INVALID_ARG: invalid argument