https://bugs.winehq.org/show_bug.cgi?id=52998
--- Comment #1 from Andrew Eikum aeikum@codeweavers.com --- XAudio2 changed the CLSIDs for these effects between 2.7 and 2.8. I was curious to know if the old CLSIDs were supported by the newer versions, so I wrote those tests. I was surprised that they were supported, and I don't think any application actually used them in that way.
It's a little interesting that they dropped support for the legacy CLSIDs, but I guess it's good evidence that no application actually used that. We can just remove those tests, I think.
I submitted a patch to testbot, which passes: https://testbot.winehq.org/JobDetails.pl?Key=114787