Removed continious delivery (CD) in favor of deploying through nix

.github/workflows/cd.yml

@@ -1,67 +0,0 @@
-name: continious deployment
-
-on:
-  push:
-    branches: [master]
-
-jobs:
-  cd:
-    name: Deploy
-    runs-on: ubuntu-latest
-    timeout-minutes: 5
-
-    steps:
-      - name: Check out code
-        uses: actions/checkout@v4
-
-      - name: Set up Go
-        uses: actions/setup-go@v5
-        with:
-          go-version: "1.23.2"
-
-      # Runs CI again (doesn't seem to be possible to reuse CI as it's in a diff workflow)
-      - name: Format code
-        run: test -z $(go fmt ./...)
-
-      - name: Install staticcheck
-        run: go install honnef.co/go/tools/cmd/staticcheck@latest
-
-      - name: Run static analysis (linting)
-        run: staticcheck ./...
-
-      - name: Run tests
-        run: go test --cover ./...
-
-      - name: Install gosec
-        run: go install github.com/securego/gosec/v2/cmd/gosec@latest
-
-      - name: Run gosec
-        run: gosec ./...
-
-      # Starts deployment
-      - name: Install goose
-        run: go install github.com/pressly/goose/v3/cmd/goose@latest
-
-      - name: Convert migrations from timestamps to indices
-        run: goose fix -dir internal/server/api/migrations
-
-      - name: Build executable
-        run: GOOS=linux GOARCH=amd64 go build -o ./eko-server ./cmd/server
-
-      - name: Deploy to server
-        uses: easingthemes/ssh-deploy@main
-        with:
-          SSH_PRIVATE_KEY: ${{ secrets.SSH_PRIVATE_KEY }}
-          ARGS: "-avz"
-          SOURCE: "eko-server"
-          REMOTE_HOST: eko.kyren.codes
-          REMOTE_USER: eko
-          TARGET: "/var/lib/eko"
-          SCRIPT_BEFORE: |
-            whoami
-            ls -al
-          SCRIPT_AFTER: |
-            whoami
-            ls -al
-            echo $RSYNC_STDOUT
-