This function does not exist. Let's remove its declaration.
struct stconn *sc_new_from_endp(struct sedesc *sedesc, struct session *sess, struct buffer *input);
struct stconn *sc_new_from_strm(struct stream *strm, unsigned int flags);
struct stconn *sc_new_from_check(struct check *check, unsigned int flags);
-struct stconn *sc_new_from_haterm(struct sedesc *sd, struct session *sess, struct buffer *input);
void sc_free(struct stconn *sc);
int sc_attach_mux(struct stconn *sc, void *target, void *ctx);