I don't think they make 16 din demo bindings... Also to my knowledge you can't completely convert them to non-demo bindings. It's impossible to remove all the demo hardware
You can actually convert the salomon/atomic demo bindings. You need to get new base plates for the heel and toe but it can be done.
Op to take the toe off you first have to remove the plastic piece infront of the AFD plate. It's this part which prevents the toe piece coming completely off if the clip at the front became loose.