How to unroot Android: Using SuperSU
1>>Download and install SuperSU from the Link below.
Download SuperSU Here
2>>Launch SuperSU and go to the “Settings” tab.
Scroll down until you see “Full unroot”. Tap it.
3>>You’ll be asked to confirm that you want to completely unroot your device – tap continue.
Once done, SuperSU will close automatically.
4>>Restart your Android device.
5>>When your device has booted back up, uninstall SuperSU and you’ll be the proud owner of one completely unrooted Android device.
6>>Kudos, You have successfully uprooted your device