Fluid level for track?

I'm preparing my Clio for the first track day. If the fluid is topped up all the way on my Porsche it tends to overflow when I track the car and the brakes, and turbo get really hot. Should I drain some fluid from the reservoir on the Clio to make room for thermal expansion, or is it not needed?
 
For the brakes? No, just makes sure the fluids not old and knackered and the reservoir level is correct.
 
Sorry for the late reply. I thought I had responded. I did as you said and had no problems with the brake fluid or overheating.