remove MIRIcult archive link

remove MIRIcult archive link

Someone argued in my PMs that the link was harmful for spreading
private personal information, and I was initially inclined to take a
principled anti-censorship stand. (The link is a relevant exhibit
about the incident being discussed; I'm not endorsing it or going out
of my way to signal-boost it.) Ultimately, I'm deciding to give in
because the link isn't very important to my story and it's not worth
my time to argue about it. Arguably this means I'm not taking a
principled anti-extortion stand, either? On theme!