remove github workflows

.github/workflows/pages.yml

@@ -1,27 +0,0 @@
-on:
-  push:
-    branches: [main]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: DeterminateSystems/nix-installer-action@main
-      - uses: actions/checkout@v4
-      - run: nix-build
-      - uses: actions/upload-pages-artifact@v3
-        with:
-          path: result/
-  deploy:
-    needs: build
-    permissions:
-      pages: write
-      id-token: write
-    environment:
-      name: github-pages
-      url: ${{ steps.deployment.outputs.page_url }}
-    runs-on: ubuntu-latest
-    steps:
-      - name: Deploy to GitHub Pages
-        id: deployment
-        uses: actions/deploy-pages@v4