cl.exe doesn't understand Zd (in either MSVC 2017 or 2019), so neiter
should we. It used to do the same as -gline-tables-only which is
exposed as clang-cl flag as well, so if you want this behavior, use
gline-tables-only. That makes it clear that it's a clang-cl-only flag
that won't work with cl.exe.
Motivated by the discussion in D92958.