Removes the thumbnail (featured image) from the given post.

Parameters

$postint|WP_Postrequired

Post ID or post object from which the thumbnail should be removed.

Return

Source

function delete_post_thumbnail( $post ) {
	$post = get_post( $post );
	if ( $post ) {
		return delete_post_meta( $post->ID, '_thumbnail_id' );
	}
	return false;
}

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