If Fox jettisoned the AVP movies, I would lose a TON of respect for them. I get why they may want to clean up the EU, at some point many of those stories do feel like "filler" episodes, but de-canonizing any of the movies is crossing a line.
Have some self-respect, Fox, you made a movie and you gave it your best, you should stand proudly by your work no matter what people say, to do so otherwise would only prove you have no backbone. If you're going to de-canonize something, de-canonize Newt's death; come to think of it, I could probably jettison the AVP movies if it meant jettisoning Newt's demise as well.