[openwrt/openwrt] tegra: sysupgrade: remove redundant MBR check

[LEDE Commits]

adrian pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/fa9e8a008a1e207137f8cddb3fe0f877465e93d9

commit fa9e8a008a1e207137f8cddb3fe0f877465e93d9
Author: Tomasz Maciej Nowak <tmn505 at gmail.com>
AuthorDate: Wed Nov 25 17:33:38 2020 +0100

    tegra: sysupgrade: remove redundant MBR check
    
    This is already done by get_partitions.
    
    Signed-off-by: Tomasz Maciej Nowak <tmn505 at gmail.com>
    [add "redundant" to title]
    Signed-off-by: Adrian Schmutzler <freifunk at adrianschmutzler.de>
---
 target/linux/tegra/base-files/lib/upgrade/platform.sh | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/target/linux/tegra/base-files/lib/upgrade/platform.sh b/target/linux/tegra/base-files/lib/upgrade/platform.sh
index ea9bbe92bf..05b48cd50a 100644
--- a/target/linux/tegra/base-files/lib/upgrade/platform.sh
+++ b/target/linux/tegra/base-files/lib/upgrade/platform.sh
@@ -1,23 +1,10 @@
 REQUIRE_IMAGE_METADATA=1
 
-get_magic_at() {
-	local pos="$2"
-	get_image "$1" | dd bs=1 count=2 skip="$pos" 2>/dev/null | hexdump -v -n 2 -e '1/1 "%02x"'
-}
-
 platform_check_image() {
 	local diskdev partdev diff
 
 	[ "$#" -gt 1 ] && return 1
 
-	case "$(get_magic_at "$1" 510)" in
-		55aa) ;;
-		*)
-			echo "Failed to verify MBR boot signature."
-			return 1
-		;;
-	esac
-
 	export_bootdevice && export_partdevice diskdev 0 || {
 		echo "Unable to determine upgrade device"
 		return 1