Revert "Update for docs-build branch"

This reverts commit cd628fe5af.

.github/workflows/deploy-docs.yml

@@ -1,22 +0,0 @@
-name: Deploy Docs
-on:
-  repository_dispatch:
-    types: request-build-reference # legacy
-  schedule:
-  - cron: '0 10 * * *' # Once per day at 10am UTC
-  workflow_dispatch:
-permissions: read-all
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    if: github.repository_owner == 'spring-projects'
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v2
-      with:
-        ref: docs-build
-        fetch-depth: 1
-    - name: Dispatch
-      run: gh workflow run --ref $(git rev-parse --abbrev-ref HEAD) deploy-docs.yml
-      env:
-        GH_TOKEN: ${{ secrets.GH_ACTIONS_REPO_TOKEN }}