Uninstall pi-hole on a Firewalla Blue?

Just a quick question for the group: I have a Firewalla Blue running pi-hole. I've stopped using pi-hole and I'd like to uninstall it to ensure that it's not consuming any resources. I had installed it using the tutorial here. https://help.firewalla.com/hc/en-us/articles/360034635473-Tutorial-Running-Pi-Hole-on-Firewalla-Blue-in-5-mins

To uninstall pi-hole, is it simply a "pihole uninstall" in SSH, or is there anything else I'll need to do? Thanks in advance!