delete_site_meta_by_key

WordPress Version: 5.1

/**
 * Deletes everything from site meta matching meta key.
 *
 * @since 5.1.0
 *
 * @param string $meta_key Metadata key to search for when deleting.
 * @return bool Whether the site meta key was deleted from the database.
 */
function delete_site_meta_by_key($meta_key)
{
    return delete_metadata('blog', null, $meta_key, '', true);
}