delete_post_thumbnail() WordPress Function

function delete_post_thumbnail( $post ) {
	$post = get_post( $post );
	if ( $post ) {
		return delete_post_meta( $post->ID, '_thumbnail_id' );
	}
	return false;
}
Uses	Description
wp-includes/post.php:delete_post_meta()	Deletes a post meta field for the given post ID.
wp-includes/post.php:get_post()	Retrieves post data given a post ID or post object.
Used By	Description
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php:WP_REST_Posts_Controller::handle_featured_media()	Determines the featured media based on a request param.
wp-admin/includes/ajax-actions.php:wp_ajax_set_post_thumbnail()	Ajax handler for setting the featured image.
wp-includes/post.php:wp_insert_post()	Insert or update a post.
wp-includes/class-wp-xmlrpc-server.php:wp_xmlrpc_server::mw_editPost()	Edit a post.
wp-includes/class-wp-xmlrpc-server.php:wp_xmlrpc_server::_insert_post()	Helper method for wp_newPost() and wp_editPost(), containing shared logic.