I looked everywhere (praying not to bump into eric and crash...) for the toilets and even the map creator doesn't have them! Are they removed?

No.

The Dead Guard inside even has a somewhat updated Death Pose.

for some reason i don't hear the second audio file where he shoots himself whenever i go near. I can hear him whimpering when his body is clearly dead and the blood pool growing. Though this was before the patch, Haven't played the patch yet.

I didn't encounter the butt ghost and the Guard was dead with no bullet sounds when I came into the toilet section.

Picture this: If you needed to take a piss in the light containment zone, you'd have to walk to the checkpoint, through heavy containment to the other checkpoint to the entrance zone.

Honestly I think that there should be more rooms like bathrooms and such. People actually DID work at this place. It wasn't just for containment, you know. So at least one bathroom in every zone would make perfect sense.