Windows 10 remove apps from WIM file

To find the index of the version of Windows in the install.wim file.
Open an elevated command prompt and run,
dism /Get-WimInfo /WimFile:X:\sources\install.wim

Will need Windows 10 ADK installed.

Script for removing built-in apps from the wim file,
https://gallery.technet.microsoft.com/Removing-Built-in-apps-65dc387b