In written fiction, if a story, novel, etc., is narrated in the third person, then the story has no narrator—only a narration, composed by an author and read by a reader.
More precisely, unless a character in the diegesis narrates, there is no narrator—only narration.
This also alleviates a trouble of those who try to analogize fictional and cinematic narrators. It turns out that, in the latter, as the former, there is no narrator—only narration—unless a character in the diegesis narrates.
And then, in film, there must still be a narration, since the character’s narrating represents only a part of the storytelling; there remain editing, performance, music, composition of the shot, and all the other extra-linguistic devices.