How to remove the Live Preview button from my plugin?

I can’t remove the button “Live Preview” from the item details page and I don’t have a demo URL (is it required?).
How I can remove this button? I don’t find it on the edit page…
Thank you.

for WordPress plugin you should provide Live demo URL so that your customer can check the plugin functionality by clicking the “Live Preview” button. If you need to temporarily remove the “Live Preview” button try to remove the deo URL by editing in the item description section.

Ok, thank you for your reply.