I dont like xposed as it normally creates more issues. In regards to disabling root look inside toolbox you can shut it off there.There is no need to unroot. Follow these instructions and you should be good to go:
1. First grab Xposed (xposed-v81-sdk23-arm.zip if you are using this device/ROM) from here: http://dl-xda.xposed.info/framework/sdk23/arm/
2. Transfer zip to your Touchpad, reboot into custom recovery and install the zip.
3. First boot after install might take a little while, but once booted up, install the app (XposedInstaller_3.0_alpha4.apk) from http://xdaforums.com/showthread.php?t=3034811
4. Reboot after running the app at least once.
5. Lastly, install this module from the Xposed app: http://repo.xposed.info/module/com.devadvance.rootcloak2
You should then be able to hide root from those specific apps.
Sent from my Nexus 6 using XDA-Developers mobile app