scsi: sym53c8xx: remove some redundant variables

Variables scriptb0 and dp_sgmin are being assigned but are never used
hence they are redundant and can be removed.

Cleans up clang warnings:
warning: variable 'scriptb0' set but not used [-Wunused-but-set-variable]
warning: variable 'dp_sgmin' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/sym53c8xx_2/sym_fw.c

@@ -295,10 +295,8 @@ static void
 sym_fw1_setup(struct sym_hcb *np, struct sym_fw *fw)
 {
 	struct sym_fw1a_scr *scripta0;
-	struct sym_fw1b_scr *scriptb0;
 
 	scripta0 = (struct sym_fw1a_scr *) np->scripta0;
-	scriptb0 = (struct sym_fw1b_scr *) np->scriptb0;
 
 	/*
 	 *  Fill variable parts in scripts.
@@ -319,10 +317,8 @@ static void
 sym_fw2_setup(struct sym_hcb *np, struct sym_fw *fw)
 {
 	struct sym_fw2a_scr *scripta0;
-	struct sym_fw2b_scr *scriptb0;
 
 	scripta0 = (struct sym_fw2a_scr *) np->scripta0;
-	scriptb0 = (struct sym_fw2b_scr *) np->scriptb0;
 
 	/*
 	 *  Fill variable parts in scripts.

drivers/scsi/sym53c8xx_2/sym_hipd.c

@@ -3855,7 +3855,7 @@ static void sym_modify_dp(struct sym_hcb *np, struct sym_tcb *tp, struct sym_ccb
 
 int sym_compute_residual(struct sym_hcb *np, struct sym_ccb *cp)
 {
-	int dp_sg, dp_sgmin, resid = 0;
+	int dp_sg, resid = 0;
 	int dp_ofs = 0;
 
 	/*
@@ -3902,7 +3902,6 @@ int sym_compute_residual(struct sym_hcb *np, struct sym_ccb *cp)
 	 *  We are now full comfortable in the computation 
 	 *  of the data residual (2's complement).
 	 */
-	dp_sgmin = SYM_CONF_MAX_SG - cp->segments;
 	resid = -cp->ext_ofs;
 	for (dp_sg = cp->ext_sg; dp_sg < SYM_CONF_MAX_SG; ++dp_sg) {
 		u_int tmp = scr_to_cpu(cp->phys.data[dp_sg].size);