treewide: remove obsolete sysupgrade watchdog kill

The watchdog kill command was meant for busybox watchdog. Busybox watchdog
was replaced by the procd watchdog mid 2013 with commit df7ce9301a
("busybox: disable the watchdog utility by default"), which makes the kill
command obsolete since quite some time.

Signed-off-by: Mathias Kresin <dev@kresin.me>

target/linux/adm5120/base-files/lib/upgrade/platform.sh

@@ -33,12 +33,3 @@ platform_do_upgrade() {
 	PART_NAME="$sys_mtd_part"
 	default_do_upgrade "$ARGV"
 }
-
-disable_watchdog() {
-	killall watchdog
-	( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
-		echo 'Could not disable watchdog'
-		return 1
-	}
-}
-append sysupgrade_pre_upgrade disable_watchdog

target/linux/apm821xx/base-files/lib/upgrade/platform.sh

@@ -61,13 +61,3 @@ platform_copy_config() {
 		;;
 	esac
 }
-
-disable_watchdog() {
-	killall watchdog
-	( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
-		echo 'Could not disable watchdog'
-		return 1
-	}
-}
-
-append sysupgrade_pre_upgrade disable_watchdog

target/linux/ar71xx/base-files/lib/upgrade/platform.sh

@@ -849,13 +849,3 @@ platform_do_upgrade() {
 		;;
 	esac
 }
-
-disable_watchdog() {
-	killall watchdog
-	( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
-		echo 'Could not disable watchdog'
-		return 1
-	}
-}
-
-append sysupgrade_pre_upgrade disable_watchdog

target/linux/au1000/base-files/lib/upgrade/platform.sh

@@ -24,13 +24,3 @@ platform_do_upgrade() {
 	get_image "$1" | tar -Oxvf - $KERNEL_IMG | mtd write - "kernel"
 	get_image "$1" | tar -Oxvf - $ROOTFS_IMG | mtd $conf write - "rootfs"
 }
-
-disable_watchdog() {
-        killall watchdog
-        ( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
-                echo 'Could not disable watchdog'
-                return 1
-        }
-}
-
-append sysupgrade_pre_upgrade disable_watchdog

target/linux/cns3xxx/base-files/lib/upgrade/platform.sh

@@ -17,15 +17,3 @@ platform_check_image() {
 platform_do_upgrade() {
 	default_do_upgrade "$ARGV"
 }
-
-disable_watchdog() {
-	v "killing watchdog"
-	killall watchdog
-	( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
-		echo 'Could not disable watchdog'
-		return 1
-	}
-}
-
-# CONFIG_WATCHDOG_NOWAYOUT=y - can't kill watchdog unless kernel cmdline has a mpcore_wdt.nowayout=0
-#append sysupgrade_pre_upgrade disable_watchdog

target/linux/ixp4xx/base-files/lib/upgrade/platform.sh

@@ -135,15 +135,3 @@ platform_do_upgrade() {
 		;;
 	esac
 }
-
-disable_watchdog() {
-	v "killing watchdog"
-	killall watchdog
-	( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
-		echo 'Could not disable watchdog'
-		return 1
-	}
-}
-
-# CONFIG_WATCHDOG_NOWAYOUT=y - can't kill watchdog unless kernel cmdline has a mpcore_wdt.nowayout=0
-#append sysupgrade_pre_upgrade disable_watchdog

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

@@ -16,12 +16,3 @@ platform_pre_upgrade() {
 }
 
 # use default for platform_do_upgrade()
-
-disable_watchdog() {
-	killall watchdog
-	( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
-		echo 'Could not disable watchdog'
-		return 1
-	}
-}
-append sysupgrade_pre_upgrade disable_watchdog

target/linux/mpc85xx/base-files/lib/upgrade/platform.sh

@@ -10,13 +10,3 @@ platform_check_image() {
 }
 
 # use default for platform_do_upgrade()
-
-disable_watchdog() {
-	killall watchdog
-	( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
-		echo 'Could not disable watchdog'
-		return 1
-	}
-}
-
-append sysupgrade_pre_upgrade disable_watchdog

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

@@ -34,13 +34,3 @@ platform_copy_config() {
 		;;
 	esac
 }
-
-disable_watchdog() {
-	killall watchdog
-	( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
-		echo 'Could not disable watchdog'
-		return 1
-	}
-}
-
-append sysupgrade_pre_upgrade disable_watchdog

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

@@ -16,13 +16,3 @@ platform_check_image() {
 platform_pre_upgrade() {
 	nand_do_upgrade $1
 }
-
-disable_watchdog() {
-	killall watchdog
-	( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
-		echo 'Could not disable watchdog'
-		return 1
-	}
-}
-
-append sysupgrade_pre_upgrade disable_watchdog

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

@@ -324,17 +324,8 @@ platform_do_upgrade() {
 	esac
 }
 
-disable_watchdog() {
-	killall watchdog
-	( ps | grep -v 'grep' | grep '/dev/watchdog' ) && {
-		echo 'Could not disable watchdog'
-		return 1
-	}
-}
-
 blink_led() {
 	. /etc/diag.sh; set_state upgrade
 }
 
-append sysupgrade_pre_upgrade disable_watchdog
 append sysupgrade_pre_upgrade blink_led