/**
* Decrementa un like en el post
* @param Like $like
* @throws PDOException si ocurre algun error en la BD
*/
public function removeLikePost(Like $like)
{
$stmt = $this->db->prepare("DELETE FROM likes WHERE authorLike=? and likePost=?");
$stmt->execute(array($like->getAuthor(), $like->getPost()->getIdPost()));
}