You can choose to disable gift cards if you no longer wish to use them in your store. To do this, follow the steps below:
1. Navigate to Catalog > Gift cards.
2. Click the Enable gift cards toggle so that it turns grey
3. Once you have done this, gift cards will be disabled and you will no longer be able to issue gift cards from Retail POS.
You will still be able to redeem existing gift cards and view reports on gift cards sold before you disabled this feature.
For more information on Retail POS gift cards, check out this article.