How to Remove the One Time Purchase button

My subscription products have a one-time purchase option available. How can I remove this and only show the recurring subscription options?

You need to make your subscription products "subscription only". To do this:

1. From within the Shopify admin, navigate to Products.
2. Find a product that belongs to a subscription group, and click on the product name to access the settings.
3. Scroll down to the Purchase options section.
4. Check the box next to Only show product with these purchase options.
5. Click Save.