Removed the ambiguous session_get0_current_payload() API. It is unclear whether the original packet payload or TCP reassembled payload is obtained.

It is recommended to:
* Use packet_get_payload() to obtain the original packet payload
* Use tcp_segment_get_data() to obtain the reassembled data

src/session/session_utils.h

@@ -78,7 +78,6 @@ const struct packet *session_get_first_packet(const struct session *sess, enum f
 // session current packet
 void session_set_current_packet(struct session *sess, const struct packet *pkt);
 const struct packet *session_get0_current_packet(const struct session *sess);
-const char *session_get0_current_payload(const struct session *sess, uint16_t *payload_len);
 
 // session symmetric
 int session_is_symmetric(const struct session *sess, unsigned char *flag);