scsi: ibmvscsi_tgt: remove set but not used variables 'iue' and 'sd'

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

drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c: In function ibmvscsis_send_messages:
drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c:1888:19: warning: variable iue set but not used [-Wunused-but-set-variable]
drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c: In function ibmvscsis_queue_data_in:
drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c:3806:8: warning: variable sd set but not used [-Wunused-but-set-variable]

Link: https://lore.kernel.org/r/20191213064042.161840-1-chenzhou10@huawei.comReported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Chen Zhou <chenzhou10@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c

@@ -1877,7 +1877,6 @@ static void ibmvscsis_send_messages(struct scsi_info *vscsi)
 	 */
 	struct viosrp_crq *crq = (struct viosrp_crq *)&msg_hi;
 	struct ibmvscsis_cmd *cmd, *nxt;
-	struct iu_entry *iue;
 	long rc = ADAPT_SUCCESS;
 	bool retry = false;
 
@@ -1931,8 +1930,6 @@ static void ibmvscsis_send_messages(struct scsi_info *vscsi)
 					 */
 					vscsi->credit += 1;
 				} else {
-					iue = cmd->iue;
-
 					crq->valid = VALID_CMD_RESP_EL;
 					crq->format = cmd->rsp.format;
 
@@ -3796,7 +3793,6 @@ static int ibmvscsis_queue_data_in(struct se_cmd *se_cmd)
 						 se_cmd);
 	struct iu_entry *iue = cmd->iue;
 	struct scsi_info *vscsi = cmd->adapter;
-	char *sd;
 	uint len = 0;
 	int rc;
 
@@ -3804,7 +3800,6 @@ static int ibmvscsis_queue_data_in(struct se_cmd *se_cmd)
 			       1);
 	if (rc) {
 		dev_err(&vscsi->dev, "srp_transfer_data failed: %d\n", rc);
-		sd = se_cmd->sense_buffer;
 		se_cmd->scsi_sense_length = 18;
 		memset(se_cmd->sense_buffer, 0, se_cmd->scsi_sense_length);
 		/* Logical Unit Communication Time-out asc/ascq = 0x0801 */