Delete show_link_to_built_docs.yml

This is triggering crazy amounts of API calls for internal tools. I'm reverting this to stop the problem.

.github/workflows/show_link_to_built_docs.yml

-name: See built docs here!
-
-on:
-  status
-
-jobs:
-  circleci_artifacts_redirector_job:
-    runs-on: ubuntu-latest
-    name: Run CircleCI artifacts redirector
-    steps:
-      - name: GitHub Action step
-        uses: larsoner/circleci-artifacts-redirector-action@master
-        with:
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
-          artifact-path: 0/docs/index.html
-          circleci-jobs: build_docs