scsi: bfa: Remove set but not used variable 'fchs'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/scsi/bfa/bfa_svc.c: In function 'uf_recv':
drivers/scsi/bfa/bfa_svc.c:5520:17: warning:
 variable 'fchs' set but not used [-Wunused-but-set-variable]
  struct fchs_s *fchs;
                 ^

Link: https://lore.kernel.org/r/20200418071057.96699-1-yuehaibing@huawei.com


Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>