lol. I don't think Drake would diss Rihanna. Drake said that Rihanna is one of the most amazing women he's ever met, and he thinks that Rihanna and Nicki MInaj are the most iconic female artists of today.
It's more likely that Rihanna is currently giving Drake a blow job than it is that Drake would diss her.
This isn't a diss. Drake is far too classy. Also, Drizzy and Rih are too familiar with one another for it to be a diss and two collabs don't just vanish into thin air, especially since one's a current single.
This interpretation is REACHING considering everything between Drake and Rih.