Licensed pharmacy technician here. This won't be widespread whatsoever. Beyond verifying prescription contents, pharmacists are responsible for a myriad of other duties. Specifically, ensuring the pharmacy follows strict protocols when it comes to dealing with controlled medication and making sure patient needs are met. A robot can't answer nor comprehend the bottomless pit of questions and complications a drug can present. Not to mention, insurance companies are a b*tch - but that's another story.
Robots are useful in an assembly line, but not even the best A.I. can replicate what a human brain can do.