You have at least three options. I'll list them in order of complexity:
1. Forget it.
2. Use a syringe or turkey baster to remove some fluid from the reservoir, being careful not to remove too much so as not to introduce air into the system. Repeat once a week for a month. Then forget it.
3. If you can access the bleed screw on the master cyl without removing the IC, great. Otherwise remove the IC, attach a drain tube to the bleeder, dress the entire area with rags, and have a second person work the pedal from inside the car for you. Depress the pedal, open the air bleeded for 1 or 2 seconds, close the air bleeder, release the pedal slowly, and repeat.
Options 1 and 2 are IMO probably most popular.