nwam_known_wlan_destroy
nwam_error_t ret = nwam_known_wlan_destroy(wlan, NWAM_FLAG_DO_NOT_FREE);
ret = nwam_known_wlan_destroy(wlan_h, 0);
extern nwam_error_t nwam_known_wlan_destroy(nwam_known_wlan_handle_t, uint64_t);