None of us are likely tire experts, but that looks like it was pretty gently rubbed off, which I assume it was if it didn't tear up your car.
Given that it's not structural damage to the tire, and just the simple removal of some rubber, I don't see how this isn't like driving on the tire.
I mean, you can literally order "tire shaving" for race tires.
I'd send it, even on a track.