Relax the ms-intrin.cpp test

The part that checks that certain functions are marked deprecated doesn't
seem that useful, and it has the bad effect that the test hard-coded the
locations of the notes from that test.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199441 91177308-0d34-0410-b5e6-96231b3b80d8