Hello Ajha_289,
You may use the ASUS AI Suite 3 Cleaner utility to successfully remove AI suite and its services. I have noticed that uninstalling the program only, will leave its services/drivers active.
ASUS AI Suite 3 Cleaner Download; https://dlcdnets.asus.com/pub/ASUS/mb/14Utilities/UninstallAI3Tool_1.00.04.zip
In case you do not trust the direct download link above. here is the product page of my motherboard, where the utility can be found on ASUS ROG website, as well. Located under the Utilities category; https://rog.asus.com/us/motherboards/rog-strix/rog-strix-z390-e-gaming-model/helpdesk_download/