If everything is working well and they aren't causing any harm - I'd suggest leaving them as they don't take up a lot of space.
If you're feeling adventurous, try moving them to a folder where you can easily restore them if needed.
There's a lot located in the System32 subdirectory that I'd be most concerned with
Those located in the System32\Setup subdirectory would be less of a concern to me.
The others are likely (IMO) to be important also.
Finally, I suspect that they aren't needed simply because they're labeled with the (2) suffix - but it's not my system that I'm messing with here!
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