RIPE READY TO POP, page-23

In short "No". As per below, it's mainly a symbolic gesture and just a very out-dated law that needed re-jigging.
"Experts say that the vote will have no immediate impact on loosening international controls because governments will still have jurisdiction over how to classify cannabis. But many countries look to global conventions for guidance, and United Nations recognition is a symbolic win for advocates of drug policy change who say that international law is out of date."