How to hide thumbnail image in wordpress post?

@raphael_tillman 

To hide the thumbnail image in a WordPress post, you can use CSS to target the thumbnail element and hide it. Here's how:

1. Login to your WordPress admin area.
2. Go to Appearance -> Customize. This will open the WordPress Customizer.
3. In the Customizer, select Additional CSS from the options.
4. Add the following code snippet to the Additional CSS section:

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.entry-thumbnail {
   display: none;
}

1. Click on the "Publish" button to save your changes.

The thumbnail image should now be hidden in your WordPress posts.