base-files: remove block2mtd checks from sysupgrade

This hasn't been used in a long time

Signed-off-by: Felix Fietkau <nbd@nbd.name>

package/base-files/files/lib/upgrade/common.sh

@@ -126,10 +126,6 @@ export_bootdevice() {
 
 	if read cmdline < /proc/cmdline; then
 		case "$cmdline" in
-			*block2mtd=*)
-				bootdisk="${cmdline##*block2mtd=}"
-				bootdisk="${bootdisk%%,*}"
-			;;
 			*root=*)
 				rootpart="${cmdline##*root=}"
 				rootpart="${rootpart%% *}"

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

@@ -7,10 +7,6 @@ platform_get_rootfs() {
 
 	if read cmdline < /proc/cmdline; then
 		case "$cmdline" in
-			*block2mtd=*)
-				rootfsdev="${cmdline##*block2mtd=}"
-				rootfsdev="${rootfsdev%%,*}"
-			;;
 			*root=*)
 				rootfsdev="${cmdline##*root=}"
 				rootfsdev="${rootfsdev%% *}"