[Theme Horse Support Team]

Hi bkchua,

To remove the link from featured image it needs code customization. This feature is not available in our theme. You need to hire a developer to fix it.
Go to Appearance -> Theme Options -> Design Options Tab -> Custom CSS paste the following CSS code and Click on save all changes button:

.post-featured-image {
  text-align: center;
}

hope this may help you

Thank you!