disable (broken) smoke test for /ncov/global
disable (broken) smoke test for /ncov/global

Smoke testing works as intended when running locally, however it
is currently broken on GitHub Actions which causes confusion.
https://github.com/nextstrain/auspice/issues/1215 has been created
to fix this.

nextstrain/auspice,nextstrain/auspice,nextstrain/auspice