docs: Embedded table of contents is redundant and makes it hard to see top part of docs (#1516)

.github/workflows/generate-toc.yml

@@ -1,21 +0,0 @@
-name: Generate README table of contents
-on:
-  push:
-    branches:
-      - master
-    paths:
-      - README.md
-jobs:
-  generate:
-    if: github.repository == 'itzg/docker-minecraft-server'
-    runs-on: ubuntu-latest
-    timeout-minutes: 5
-    steps:
-      - uses: actions/checkout@v3
-      - run: |
-          curl https://raw.githubusercontent.com/ekalinin/github-markdown-toc/master/gh-md-toc -o gh-md-toc
-          chmod a+x gh-md-toc
-          ./gh-md-toc --insert --no-backup README.md
-      - uses: stefanzweifel/git-auto-commit-action@v4.14.1
-        with:
-          commit_message: "docs: Auto update markdown TOC"