Default Root & Remove Account on Stock?

Newbie to these complex things, but smart enough to have SD card booted CM7 on my old Nook Tablet.
On the Nook Tablet, I do recall an easy one file delete that allowed me to remove the Google Play account (no ID tied to it).

Any similar thing on a rooted stock Nook HD+? Or only possible with a CM10+ FW?

Thanks!