DXVK doesn't create empty log files when using none though?
Not entirely sure what your problem is, it works as intended here. Note that it doesn't actively delete any existing log files.
If you still see files being created, then it's because the application in question doesn't see the environment variable for whatever reason.
@doitsujin never mind I am apparently a bit daft I had it set to error sorry for the bad bug report closing.
DXVK_LOG_LEVEL=none`x1 2020-07
I think it would be more preferable if
DXVK_LOG_LEVEL=nonedidn't create pointless empty log files, or that there was some way to disable log files entirely.