fix for missing decorations in PHYS

Fix for ATLASG-2673. For closeBy isolation correction, decorations are made for selected leptons and photons as well as those not selected. I removed a check that didn't do the correction, and thus decorations, for an event if there were not any selected lep/phs. The problem is that the check didn't account for unselected lep/phs. Simplest is just to remove the check and the decorations are always done.

I also removed the call to setupIsoCloseBySlimmingVariables from PHYS. This is only needed when adding in extra information also be able to do the close by correction on PHYS output. But this was disable before the break because of a logic conflict with the correction when making PHYS.