umm, yes you can... lol. you can unroot any device, rooting, installs busybox and the associated tools into xbin im pretty sure, puts a file called su in the sbin folder if im not mistaken though it could be xbin or even bin. and installs a program into system/app called superuser.apk or supersu.apk or something along those lines. if you remove those three things its completely unrooted and as it was at stock, also if you can get the update tool to run that will unroot it as well because it flashes the stock copy of android direct from zte which comes without root in it. and technically if you just want to disable root functionality for apps, and hide it from the naked eye, you can just uninstall the superuser app, then you cant enable it so no apps can use it, there will be no more popups asking for permission, and there will be no icon on the app menu for it, at that point su can only be activated through a command line and even then im not sure if it will function properly, also if you delete the su file that removes all ability to use root permissions, even with the superuser program still installed it will just error when it tries to give permission. and busybox, well busybox means little to nothing without those things, and it can be difficult to remove, so i wouldnt recommend trying to manually go through and delete the hundreds of symlinks it creates, but if you want to, you are more than welcome to. just keep in mind to delete those things you need root, so once you start there is no stopping till youre done unless you want to re root it and start over