crypto: remove dead CI workflows inherited from upstream
The fork inherited CI configuration from the original mirage-crypto
import:
- .github/workflows/test.yml (Linux GitHub Actions)
- .github/workflows/windows.yml (Windows GitHub Actions)
- .cirrus.yml (Cirrus CI for FreeBSD/macOS)
- .test-mirage.sh (MirageOS unikernel test script)
None of these have ever run in this fork:
- The monorepo has no top-level .github/workflows/ -- GitHub Actions
only looks at workflows at the repo root, never inside subtree
packages, so the per-package workflows have been dead since the
import.
- They install opam packages by upstream names (mirage-crypto,
mirage-crypto-rng-mirage, mirage-crypto-pk, mirage-crypto-ec)
which do not exist in the fork (we ship crypto, crypto-rng,
crypto-pk, crypto-ec).
- .test-mirage.sh invokes "mirage configure" against a mirage/
unikernel test directory that was dropped from the fork along
with the Lwt/Miou sub-libraries.
Also drop the corresponding .gitignore entries for the
no-longer-present mirage/ directory.
This is a cleanup-only commit -- no source files are touched.
The 4068-test suite still passes (no behavioural change).