Cox No Longer A Candidate

I just found out that John Cox is no longer a presidential candidate. Looking at the list on Wikipedia of candidates to be included in the debates I saw that Cox quit the race on October 27.

He said before that he would stay in the race until after the South Carolina primary, he has already paid the $25,000 or $35,000 (depending when he filed) to be on their ballot.

There is no mention of this on Cox's campaign website.