Weird CSS file I can't delete - p.css

There is some rogue css file that attached itself to my site files and I can't remove it. It's called p.css. You can see it in my snapshot below. There is no code in my html linking to it. I searched. When I point to it, it says it's a typekit file downloaded from the internet. My typekit file is next to it. That is the right one. I don't know what this p.css is or where it came from - and I can't remove it from my files. It's actually blank - there's no code on the page just this -  /**/

Can anyone tell me how to delete this file from my structure? It's been driving me crazy since last night.

Thanks in advance,

Ro