Following !59966 (merged), DESDM_EGAMMA (legacy) production no longer works (and the 3 ART tests touched in this MR are thus failing daily). It could be fixed but since a priori nobody needs that format anymore --- in particular there's no plan to migrate PerfDPD_EGamma.py to CA --- we instead decided to drop this output format from those being checked for FT0Vs. If I'm not mistaken, those are the only tests in the whole repository which were still producing that format.