Revert "[clang][slh] add attribute for speculative load hardening"

This reverts commit 801eaf91221ba6dd6996b29ff82659ad6359e885.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@347588 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed