move a test to a more appropriate directory

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99200 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Sema/x86-intrinsics-headers.c b/test/Headers/x86-intrinsics-headers.c
similarity index 100%
rename from test/Sema/x86-intrinsics-headers.c
rename to test/Headers/x86-intrinsics-headers.c