[TSan] Don't guard #include <xpc/xpc.h>

The xpc_connection_* APIs that we are intercepting are available
starting at macOS 10.7. This is old enough so that we don't need to
guard them.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@369150 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed