Hello,
Please navigate to the Dashboard > Theme Settings > Shop > Compare > there you can disable the Compare option enabled for the Site: https://snipboard.io/bnwq6s.jpg
This will completely disable the Compare functionality from your Site but if you specifically want to remove the Compare from the Single Product page, then as you are using the Accessories demo on your Site then you need to go to Dashboard > Layouts > there edit the Custom Single Product layout > in that you need to remove the Compare element added. This is how it can be specifically removed.
Best Regards.
.
