nvmet-fcloop: remove unused lsdir member.

Nothing is using lsdir member in struct fcloop_lsreq.

Reviewed-by: Christoph Hellwig <[e-mail]>
Signed-off-by: Daniel Wagner <[e-mail]>
Signed-off-by: Keith Busch <[e-mail]>

drivers/nvme/target/fcloop.c

···
 struct fcloop_lsreq {
 	struct nvmefc_ls_req		*lsreq;
 	struct nvmefc_ls_rsp		ls_rsp;
-	int				lsdir;	/* H2T or T2H */
 	int				status;
 	struct list_head		ls_list; /* fcloop_rport->ls_list */
 };