Bluetooth: Mesh: Remove unnecessary prov buf get function

Remove `bt_mesh_pb_gatt_get_buf`.

Signed-off-by: Lingao Meng <[email protected]>

Author: LingaoM

subsys/bluetooth/mesh/pb_gatt.c

@@ -27,7 +27,6 @@ struct prov_link {
 	const struct prov_bearer_cb *cb;
 	void *cb_data;
 	struct prov_bearer_send_cb comp;
-	struct net_buf_simple *rx_buf;
 	struct k_work_delayable prot_timer;
 };
 
@@ -42,8 +41,6 @@ static void reset_state(void)
 
 	/* If this fails, the protocol timeout handler will exit early. */
 	(void)k_work_cancel_delayable(&link.prot_timer);
-
-	link.rx_buf = bt_mesh_pb_gatt_get_buf();
 }
 
 static void link_closed(enum prov_bearer_link_status status)

subsys/bluetooth/mesh/pb_gatt_srv.c

@@ -127,15 +127,6 @@ static void gatt_disconnected(struct bt_conn *conn, uint8_t reason)
 	bt_mesh_adv_update();
 }
 
-struct net_buf_simple *bt_mesh_pb_gatt_get_buf(void)
-{
-	struct net_buf_simple *buf = &cli.buf;
-
-	net_buf_simple_reset(buf);
-
-	return buf;
-}
-
 static void prov_ccc_changed(const struct bt_gatt_attr *attr, uint16_t value)
 {
 	BT_DBG("value 0x%04x", value);

subsys/bluetooth/mesh/pb_gatt_srv.h

@@ -16,8 +16,6 @@ int bt_mesh_pb_gatt_send(struct bt_conn *conn, struct net_buf_simple *buf,
 int bt_mesh_pb_gatt_enable(void);
 int bt_mesh_pb_gatt_disable(void);
 
-struct net_buf_simple *bt_mesh_pb_gatt_get_buf(void);
-
 int bt_mesh_pb_gatt_adv_start(void);
 
 #endif /* ZEPHYR_SUBSYS_BLUETOOTH_MESH_PB_GATT_SRV_H_ */