Haven't but its probably 4 bolts 2 front 2 back and some wires to disconnect if there is an airbag built into the seat you would need to kill all the power. Then you may possibly have an airbag light until you plug it back in.
I have taken out the drivers seat 9 times during my subwoofer build. It is four 14mm bolts. You will have to slide the seat forward to get to the back bolts. Then I believe there are 2 electrical plugs, one for the side air bag and one for the seat belt sensor.