Remove github pages workflow

.github/workflows/gh-pages.yml

@@ -1,25 +0,0 @@
-name: GitHub Pages
-on:
-  push:
-    tags:
-      - "v[1-9]*" # push events matching `v` followed by anything larger than 0, e.g. v1.0, v20.15.10
-  workflow_dispatch:
-
-jobs:
-  deploy:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v7
-
-      - name: Setup mdBook
-        uses: peaceiris/actions-mdbook@v2
-        with:
-          mdbook-version: '0.4.4'
-
-      - run: cd docs && mdbook build
-
-      - name: Deploy
-        uses: peaceiris/actions-gh-pages@v4
-        with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          publish_dir: ./docs/book