/* Remove Featured Image in Post by Specific Category */
function remove_featured_image_post_by_category( $output, $post_id ) {
	$list_category_by_slug = array( 'uncategorized', 'video' );
	$category_post_have = get_the_category( $post_id );
	foreach ( $category_post_have as $post_category ) {
		if ( in_array( $post_category->slug, $list_category_by_slug ) ) {
			return '';
		}
	}

	return $output;
}

add_filter( 'jnews_featured_image', 'remove_featured_image_post_by_category', 10, 2 );