You’ll need to move the rotor and calipers out of the way. Use a 21mm socket to remove the caliper mounting brackets bolts. Lift the caliper off the rotor and hang it from the framerail with a wire hanger to make sure no strain is placed on the brake line. If the rotors are original, they will have Tinnerman clips holding them onto the wheel studs. Use side cutters to remove these, and pull the rotors off. You don’t need these clips when you reassemble the brakes.