Applying to PhD programs; do I need to include transcripts from unrelated master's degree program?
"All university level courses taken" means "all university level courses taken", so yes, you should submit it too. Otherwise, if at any point they discover that you had been enrolled in that masters, you could be in trouble for lying.

Even if they don't require you to submit it, you will have to explain what were you doing during that time. And a bad master's is far better than sitting at home doing noting.

Now, you don't want it to hurt your application, so you should consider explaining in your cover letter why you did poorly. That shouldn't be too difficult, I think a good bachelor and a bad master is still better than just a good bachelor.