remove OpenBSD binary build step

.builds/build-openbsd-binary.yml

@@ -1,37 +0,0 @@
-image: openbsd/7.1
-packages:
-  - gmake
-  - curl
-  - git
-  - unzip-6.0p16
-  - zstd
-tasks:
-  - install_dependencies: |
-      git clone https://github.com/asdf-vm/asdf.git ~/.asdf --branch v0.10.2
-      . $HOME/.asdf/asdf.sh
-      asdf plugin add erlang
-      asdf install erlang 25.0
-      asdf global erlang 25.0
-      asdf plugin add elixir
-      asdf install elixir 1.13
-      asdf global elixir 1.13
-      cd egalaxyd
-      mix local.hex --force
-      mix deps.get
-  - test: |
-      . $HOME/.asdf/asdf.sh
-      cd egalaxyd
-      root_dir=tmp mix test
-  - build_binary: |
-      . $HOME/.asdf/asdf.sh
-      cd egalaxyd
-      rm -rf _build
-      MIX_ENV=prod mix release # TODO Upload binary somewhere?
-triggers:
-  - action: email
-    condition: failure
-    to: Eric S. Londres <ericlondres@outlook.com>
-    cc: ~slondr/egalaxyd-devel@lists.sr.ht
-secrets:
-  - c23d754f-fd08-4efa-bb13-a26c7977c51d
-