scsi: qedf: Remove unnecessary code

Buffer 'msg' is memset() but never actually used. Drop it.

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Haowen Bai <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/scsi/qedf/qedf_attr.c

···
 	struct qedf_ctx *qedf = NULL;
 	long reading;
 	int ret = 0;
-	char msg[40];
 
 	if (off != 0)
 		return ret;
···
 		return ret;
 	}
 
-	memset(msg, 0, sizeof(msg));
 	switch (reading) {
 	case 0:
 		memset(qedf->grcdump, 0, qedf->grcdump_size);