I have a pair of EarPods without a mic that came with my son's iPod Touch. I'm not sure whether or not you can purchase them separately though.
I wonder if they have been discontinued or something. The reason I ask is that when I visit the Apple Store website and manipulate the categories, only the EarPods w/mic displays as depicted in the below screenshot.
View attachment 107867
If you are still looking for the ear pods without the mic, have a look at Amazon.Does apple not cell the ear pods without the mic?