Saying “you live in a dream world,” a federal judge today revoked the bond of a so-called sovereign citizen who insists the courts have no authority over the “undead.”Judge Richard A. Posner — who serves on the 7th U.S. Circuit Court of Appeals but sat on the trial court by designation — directed that Hakeem El Bey be kept in custody until he is sentenced for defrauding the Internal Revenue Service.Posner made the decision following a hearing in which El Bey represented himself.El Bey …