scsi: lpfc: Remove set but not used variable 'psli'

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

drivers/scsi/lpfc/lpfc_hbadisc.c: In function 'lpfc_free_tx':
drivers/scsi/lpfc/lpfc_hbadisc.c:5431:19: warning:
 variable 'psli' set but not used [-Wunused-but-set-variable]

Since commit 895427bd ("scsi: lpfc: NVME Initiator: Base modifications")
'psli' is not used any more.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/lpfc/lpfc_hbadisc.c

@@ -5428,12 +5428,10 @@ static void
 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
 {
 	LIST_HEAD(completions);
-	struct lpfc_sli *psli;
 	IOCB_t     *icmd;
 	struct lpfc_iocbq    *iocb, *next_iocb;
 	struct lpfc_sli_ring *pring;
 
-	psli = &phba->sli;
 	pring = lpfc_phba_elsring(phba);
 	if (unlikely(!pring))
 		return;