I have the following configuration to delete and copy a file from WIX.
You'll want to add some RemoveFolder
elements under your components to keep ICE64 happy.
<RemoveFolder Id="RemoveThisFolder" On="uninstall" />
For more details about removing per-user data and managing to pass all the ICE validation tests, check out How to create an uninstall shortcut (and pass all the ICE validation) by Rob Mensching.