1. Why was this removed?
2. Is there any way to bring it back? (It would be perfect for my mod)

Thanks!

I'd imagine because they wanted to make way for SCP-1162.

That and it was a horrible excuse for a game hazard. You just stood in front of a painting, some on-screen text appears, you die, and then you never acknowledge its existence ever again. What a refreshing concept for this game.