The law that stipulates that was repealed meaning it isn’t law anymore. The law that replaced that removed that from the context for a reason.
A law can’t change the constitution or what the original constitutional meaning of the term Natural Born Citizen is. Note that the new law did not include any definition for a natural born citizen - the term has simply been abandoned. So, the only time it has been defined in U.S. law Ted Cruz clearly would have qualified since his mother was U.S. citizen and his father had been a legal U.S. resident.