I'd agree with your doctor about having the clavicle plate removed, for the slight amount that opinion is worth. ($0.00) This was a big topic in the dirt bike/motocross world back when I was racing regularly. Seems that some feel there is a bigger chance of breaking the clavicle at the plate's edges, than if it was removed. Not sure about the physiology of the bone structure and its strength v. the plate being a fulcrum, to break it that easily. Maybe someone has experience in the area, since that is the actual reason for your OP, I take it.

The hardware in my spine (L4-L5 and L5-S1, 2 plates, 4 screws, and 2 cages) is a titanium alloy that is totally non-ferrous, so it won't set of any metal detector alarms. And, it has had numerous chances to do so. Thankfully the strip search and orifice exam hasn't been necessary. Since it isn't any real problem with weakening the vertebrae, I elected to leave well enough alone, as 16 major surgeries, in 10 years, was quite enough, thank you very much.

Good luck with which ever course you decide on, and its good to see you posting here, again.

Bill