Removing a bridge plate is a very serious job. Because they glued that one to the original would mean that basically the repair tech would still only have to remove the original one. It's quite possible that the whole assembly could be removed and then the original bridge plate can be separated from the capped one and salvaged. But also, there is probably a reason why someone decided to cap that old plate too and it's useless.
Given that it is functional and you like the tone of the guitar I'd suggest just leave it for now. And hey, at least they used maple
