X-Men: Days of Future Past reunites the cast members of the earlier X-Men film trilogy, but Anna Paquin's character Rogue will end up being the victim of the cutting room floor.

Bryan Singer made the decision to cut Rogue though it had nothing to do with her performance. She was supposed to appear in only one scene, which didn't make the final cut:
Through the editing process, the sequence became extraneous," explains Singer. "It's a really good sequence and it will probably end up on the DVD so people can see it. But like many things in the editing process, it was an embarrassment of riches and it was just one of the things that had to go. Unfortunately, it was the one and only sequence Anna Paquin was in, the Rogue character was in. Even though she's in the materials and part of the process of making the film, she won't appear in it.
'X-Men': Major change in this summer's 'Days of Future Past' [EW via /Film]