How do I do so, please? If there are steps involved please take me through the steps instead of just posting a link so I can learn. Thanks! :D

Go to your My Pets page (click on your active pet's name on the dashboard), then click the pet in question's "Edit Spells" link, under "Options". From there, press the [x] underneath the scroll and it will unequip and go to your inventory c:

Go to your Pets Page, and click Edit Spells, and click the X by the spell :D

Thank you both! :D