scsi: bfa: Remove unnecessary struct declarations

struct bfa_fcs_s is declared twice. First is declared at line 50, remove
the duplicate.

struct bfa_fcs_fabric_s is defined at line 175, remove unnecessary
declaration.

Link: https://lore.kernel.org/r/20210401063535.992487-1-wanjiabing@vivo.comSigned-off-by: Wan Jiabing <wanjiabing@vivo.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/bfa/bfa_fcs.h

@@ -217,9 +217,6 @@ struct bfa_vf_event_s {
 	u32        undefined;
 };
 
-struct bfa_fcs_s;
-struct bfa_fcs_fabric_s;
-
 /*
  * @todo : need to move to a global config file.
  * Maximum Rports supported per port (physical/logical).