Help Un-root Galaxy Tab 8.9 and Factory Reset

[jamesb6789]

Hi
I rooted my Galaxy Tab 8.9 using Odin and now want to factory reset it, securely delete all data and pass it on to someone else - what is the easiest way to do this?
Thanks in advance!

 

[Rukbat]

Find and delete su and BusyBox. Do a factory reset (Settings/Privacy).