[llvm-exegesis] Remove unused headers and fix naming issues

Reviewers: courbet

Reviewed By: courbet

Subscribers: tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D52565

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@343177 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed