[onie-fw-update]remove find_onie_menuentry.

platform/mellanox/onie-fw-update

@@ -10,7 +10,6 @@ this_script=${ONIE_FWPKG_PROGRAM_NAME:-$(basename $(realpath $0))}
 onie_mount=/mnt/onie-boot
 os_boot=/host
 onie_partition=
-onie_entry=0
 
 export ONIE_FWPKG_PROGRAM_NAME=$(basename $(realpath $0))
 
@@ -45,28 +44,9 @@ clean_onie_access()
 	umount $onie_partition
 }
 
-# ONIE entry must exist in grub config
-find_onie_menuentry()
-{
-	onie_entry="$(cat $os_boot/grub/grub.cfg | grep -e 'menuentry' | cat -n | awk '$0~/ONIE/ {print $1-1}')"
-	entries_num="$(echo "$onie_entry" | grep -E '^[0-9]+$' | wc -l)"
-	if [ $entries_num -eq 1 ] && [ $onie_entry -ge 1 ]; then
-		return 0
-	fi
-	return 1
-}
-
 change_grub_boot_order()
 {
-	find_onie_menuentry
-	rc=$?
-	if [ $rc -eq 0 ]; then
-		grub-editenv $os_boot/grub/grubenv set onie_entry=ONIE
-	else
-		echo "ERROR: ONIE entry wasn't found in grub config"
-		return 1
-	fi
-
+	grub-editenv $os_boot/grub/grubenv set onie_entry=ONIE
 	grub-editenv $onie_mount/grub/grubenv set onie_mode=update
 	return 0
 }