Methinks that, like Mark Twain, the rumors of our demise are greatly exaggerated.
First, you'd have to find women willing to contribute to their own elimination. Do you think they'd be as willing to do so as men?
Second, you'd still need someone to carry the baby for nine months.
Yes, but you still need a womb for the baby to grow in, unless they come up with a way to grow them completely in a lab.
It's never gonna happen, anyway. Heterosexual women will never want men to disappear. The differences between the sexes is what makes life interesting!