Remove IPxD
We should make a plan to phase out IPxD.
There's no way we'll remove IPxD from Athena in the next year or two, but there is some significant overhead to keeping these things around (mostly that we have to maintain our access to calibration database). But every time we create a new recommendation based on IPxD, we push back the eventual phase out by another few years.
We already removed IPxD in trigger, but it's going to keep creeping in (to upgrade studies, etc) as long as our example configuration includes it.