No, their exit was in the trailer, so it must be in the movie. They couldn't cut that out, there'd be no other way to explain why they're not there anymore. This isn't Family Matters; you can't just take children out and not explain where they went.
What I don't get are people who are all uptight about "Don't tell me what happens in the book, I only watch the movies!!" First of all, the movies come out YEARS after the books; you'd find out from SOMEBODY if not me. If you really wanted to find out for yourself, then read the book you lazy bum!! My best friend totally went off on me for telling her Dumbledore died after I'd read the book. I said, "Do you honestly think that, as freaking huge as this plot twist and as widespread as HP is, NO ONE would ever mention that in your presence for the next 2+ years until a movie was made????" Then she was like, "Oh. Good point."