This is just the advice I got from my professors, so take it as you will, but I was urged to mention poetry publications & accolades in my SOPs for non-CW programs. There are reasons for this that may or may not apply to you:
1. I did a minor in creative writing, and for non-cw programs I'm applying to, I want to show that all those workshops weren't a waste of time.
2. My book was a finalist for a major award recognizable by people who are not in the poetry world.
I was told that mentioning publications will help show that you can treat your work seriously and professionally.
I'd say it also depends where your poems were published - if you got into a journal like Tin House or Ploughshares or the Paris Review, etc, I think it's definitely worth mentioning. If you were published in an anonymous undergraduate student literary magazine, I wouldn't mention it.