How to hide featured image on single blog post page

How to hide the featured image on a single post in Sydney theme?

Many Thanks

Hello Reva,

Please try to use the following CSS code in order to hide (not remove) it.

You can add CSS code in DashboardAppearanceCustomizeAdditional CSS (WordPress 4.7 and up). Also you can add CSS code directly to style.css file of your child theme.

body.single-post div.entry-thumb {
    display: none;

Please feel free to ask any other questions that you might have.

Kind Regards, Roman.