nimble/ll: Remove unused adv_sm member
This is leftover after some code was removed in
@@ -110,7 +110,6 @@ struct ble_ll_adv_sm
uint32_t adv_event_start_time;
uint32_t adv_pdu_start_time;
uint32_t adv_end_time;
- uint32_t adv_rpa_timer;
uint8_t adva[BLE_DEV_ADDR_LEN];
uint8_t adv_rpa[BLE_DEV_ADDR_LEN];
uint8_t peer_addr[BLE_DEV_ADDR_LEN];
