chore(ci): remove wrong test job that never ran (#55)
Due to a typo, we were accidentally trying to run tests on the operating
system "m". Since GitHub Actions doesn't have runners running the "m"
operating system (because, as far as I know, it doesn't actually
'exist'), this test job would never actually run.
I don't know how this ended up getting merged to main, I really thought
I fixed it on the branch? But, whatever...
Signed-off-by: Eliza Weisman <eliza@buoyant.io>
Eliza Weisman