[cmake] Revert (rL319574): Resubmit Remove redundant call to cmake when building host tools.

Still fails for some bots.

Differential Revision: https://reviews.llvm.org/D40229

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@319582 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed