brcm47xx: sysupgrade: drop useless shift in platform.sh

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45913 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/brcm47xx/base-files/lib/upgrade/platform.sh

@@ -153,6 +153,5 @@ platform_do_upgrade() {
 		"cybertan")	cmd=$(platform_trx_from_cybertan_cmd "$trx");;
 	esac
 
-	shift
 	default_do_upgrade "$trx" "$cmd"
 }