Remove autoconf support.

Differential revision: http://reviews.llvm.org/D16651

llvm-svn: 259091
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 244da049d0e6d930362ef2191155f36745afc7a7
1 file changed