That statement, if we had to classify it as theist, atheist or agnostic, I would classify as agnostic. It's not saying there are no gods, it is saying you have not found any evidence for them, so you do not believe in them.

It is, in the end, a difference between the active and the passive. The active disbelief in any form of intellect 'out there' is a very different animal from the essentially passive 'I haven't seen any reason to believe, so I don't believe.'