Remove llgo per discussion on llvm-dev:

http://lists.llvm.org/pipermail/llvm-dev/2020-February/139058.html

Approved by dblaikie, pcc.

GitOrigin-RevId: 372bfc65deb859219270e8d467ee2918fb939599
2872 files changed
tree: 4b825dc642cb6eb9a060e54bf8d69288fbee4904

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