Remove malplaced commas

It may be that these commas exist for some reason I can't see. However, they are causing the plugin [BoundKeys](https://github.com/CodeEffect/BoundKeys) to choke here. Obviously, it needs to have something in place to handle malformed json, but I thought it made sense to fix it here first.

It seems like they may have just gotten copied along accidentally, but I'm not sure.