That wouldn't be hard to address. We already do with adoption and there are many fathers who do exactly that, unilaterally, regardless of what the law supposedly says.
The bigger problems are (a) the emotional connection that may still exist for a child that began in one's body, and (b) that, it seems to me, you'd need some sort of magic teleportation device or at least the process for removal would have to be no different from that of a traditional abortion or you'd still have the issue of intrusion in someone's body. Oh, and (c) that it's science fiction.