VGFacts

In the beginning of the first trailer for Five Nights at Freddy's 2, the Phone Guy can be heard saying:
"Hello! Hello! Uh...Well if you're hearing this then chances are you've made a very poor career choice..."

This piticular line of dialogue is never heard in the final game, though it is possible it was just recorded for the trailer.


BONUS TRIVIA:
The Phone Guy is voiced by the game's creator, Scott Cawthon.
(Yes, everyone already knows that but I'm gonna submit as trivia just to have it here)

Movie trailers tend to have scenes that aren't even in the movie itself(not even on DVDs as deleted scenes). So its likely that the dialogue that was heard in the trailer was just only created for the trailer of the game.

I can't really see a line like that being in the actual game. It was probably made for the trailer.