No longer used anywhere.

No longer used anywhere.

Dead.

This is a dead header.

It's not pining! It's passed on! This header is no more! It has ceased
to be!  It's expired and gone to meet its maker! It's a stiff! Bereft
of life, it rests in peace! If you hadn't nailed it to the perch it'd
be pushing up the daisies! Its metabolic processes are now history! It's
off the twig! It's kicked the bucket! It's shuffled off its mortal coil,
run down the curtain, and joined the bleeding choir invisibile!! THIS IS
AN EX-HEADER!!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9035 91177308-0d34-0410-b5e6-96231b3b80d8