Which Buddhist council included the conclusions that there is no creator-god and no day of judgment?

After the Buddha is said to have achieved Nirvana, there were subsequent Buddhist Councils that were held. Some years ago I came across an article that said that it was in one of these Councils that it was made official for Buddhists that there is no creator-god and no Day of Judgment. Which council was that? I think it was the Fourth? But I just can't find that information again.