[TrigValTools] Fix PerfMon settings in TrigValSteering
Fix-up following !52761 (merged):
- remove PerfMonStep from default check steps - it is only relevant to the old PerfMon and not PerfMonMT which we now use
- do not add explicit PerfMon enabling in the commands using Reco_tf because the transform code takes care of that already, fixes ATR-25461
- same for Trig_reco_tf since there is ambiguity as to which syntax should be used (so easier to just not have it), fixes ATR-25465