Unrooting Note 8 sgh-i467 rooted by saferoot?

Hi all, can anyone help me unroot my Note 8? It was easily rooted with saferoot. I have tried this script in a terminal emulator:
su
# mount -o remount,rw /system
# rm -f /system/etc/install-recovery-2.sh*
# rm -f /system/xbin/selinuxoff*
# find /system/xbin -type l | xargs rm
# rm /system/xbin/busybox
# mount -o remount,ro /system
# exit
$ exit

The line: rm -f /system/etc/install-recovery-2.sh* fails with no such file or directory.
I searched for install-recovery and found it with the name install-recovery.sh. So I changed this line to reflect the correct file name but still get the same error.

I am open to any recommendations on unrooting this device. I would like to upgrade to 4.4.2 or higher.

Thanks, Bob

Need Help with development issue for sgh-i467 (ATT galaxy note 8)

First, I'm not a developer... but I have compiled a few roms from scratch in the past following tutorials. I would consider myself an avid android user, not a developer.

I recently got root access for my device with a locked bootloader... thanks to @K1979C20 pointing out that kingroot v4.1 finally works on our kitkat 4.4.2 device. I then removed kingroot and installed supersu using an app called "supersu me". I now have full root access, but no custom recovery due to the locked bootloader.

I was able to use @Chainfire flashfire beta app to do a backup of all my device partitions (I did not do data or cache, but can if needed).

I'm wondering if the backup can be used to create an Odin flash able package for others to use to gain root access on their device, because the kingroot process apparently works for some, but not for others...

If not Odin flashable, what other options could my files be used for to create a rooted rom that can be installed on others sgh-i467 devices.

Would it be helpful to do a full dump of all partitions? If so, any help figuring out the partition structure and process of dumping it would be appreciated.

I'm willing to do the work on this as time permits... just looking for someone with experience to point me in the right direction.