Revert "workaround on windows for llvm6 missing advapi32.lib in llvm-config"

This reverts commit eaac218d591cad67ecc73eed352a6f051548f0ad.

This is fixed now in llvm6 rc3
78bc62fd34Andrew Kelley committed on 2/23/2018, 5:55:58 PMparente7ab2bc
1 file changedLine totals unavailable