Bluetooth: Controller: Remove unused PDU size defines

#define PKT_BIS_US(octets, mic, phy) PDU_MAX_US((octets), (mic), (phy))

/* Extra bytes for enqueued node_rx metadata: rssi (always), resolving

 * index, directed adv report, and mesh channel and instant.

 */

#define PDU_AC_SIZE_RSSI 1

#if defined(CONFIG_BT_CTLR_PRIVACY)

#define PDU_AC_SIZE_PRIV 1

#else

#define PDU_AC_SIZE_PRIV 0

#endif /* CONFIG_BT_CTLR_PRIVACY */

#if defined(CONFIG_BT_CTLR_EXT_SCAN_FP)

#define PDU_AC_SIZE_SCFP 1

#else

#define PDU_AC_SIZE_SCFP 0

#endif /* CONFIG_BT_CTLR_EXT_SCAN_FP */

#if defined(CONFIG_BT_HCI_MESH_EXT)

#define PDU_AC_SIZE_MESH 5

#else

#define PDU_AC_SIZE_MESH 0

#endif /* CONFIG_BT_HCI_MESH_EXT */

#define PDU_AC_LL_SIZE_EXTRA (PDU_AC_SIZE_RSSI + \

			      PDU_AC_SIZE_PRIV + \

			      PDU_AC_SIZE_SCFP + \

			      PDU_AC_SIZE_MESH)

struct pdu_adv_adv_ind {

	uint8_t addr[BDADDR_SIZE];

	uint8_t data[PDU_AC_DATA_SIZE_MAX];