ci: switch to external deployment

.github/workflows/deploy.yaml

@@ -1,48 +0,0 @@
-name: Deploy
-
-on:
-  push:
-    branches:
-      - master
-  workflow_dispatch:
-    branches:
-      - master
-
-jobs:
-  deploy:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository & submodules
-        uses: actions/checkout@v4
-        with:
-          submodules: recursive
-
-      - name: Sleep a moment to avoid race conditions
-        run: sleep 3
-
-      - name: Configure ssh-agent
-        uses: webfactory/ssh-agent@v0.9.0
-        with:
-          ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
-
-      - name: Scan host key
-        run: mkdir -p ~/.ssh && ssh-keyscan -t rsa $HOST >> ~/.ssh/known_hosts
-        env:
-          HOST: ${{ secrets.HOST }}
-
-      - name: Setup Hugo
-        uses: peaceiris/actions-hugo@v2
-        with:
-          hugo-version: "latest"
-          extended: true
-
-      - name: Build
-        run: hugo --minify --gc
-
-      - name: Deploy
-        run:
-          rsync -avx --delete public/
-          $USERNAME@$HOST:/home/$USERNAME/hosting/www
-        env:
-          HOST: ${{ secrets.HOST }}
-          USERNAME: ${{ secrets.USERNAME }}