FFII: Leila. I liked her, but she really didn't have much to offer. Except a ship.
FFIV: FuSoYa. He just felt like a filler to me.
FFV: Krile, I guess. I didn't mind her, but I liked Galuf better.
FFVI: The usual lot: Gogo, Umaro, Mog and Gau.
FFVII: I didn't think Cait Sith was entirely relevant. Or Yuffie, even though I liked her.
FFVIII: Pervine should have just left after the failed assassination attempt. Quistis didn't really add much to the story either.
FFX: Kimahri.
FFXII: Penelo and Vaan were just tag-alongs, really.