[DOCS] Delete old asciidoc preview URL action (#123909)

.github/workflows/docs-preview-links.yml

@@ -1,29 +0,0 @@
-name: Docs Preview Links
-
-on:
-  pull_request_target:
-    types: [opened]
-    paths:
-      - "**.asciidoc"
-
-jobs:
-  doc-preview:
-    if: github.repository == 'elastic/elasticsearch'
-    permissions:
-      pull-requests: write
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/github-script@v6
-        name: Add doc preview links
-        with:
-          script: |
-            const pr = context.payload.pull_request;
-            const comment = `Documentation preview:
-              - ✨ [Changed pages](https://${context.repo.repo}_bk_${pr.number}.docs-preview.app.elstc.co/diff)`;
-
-            github.rest.issues.createComment({
-              issue_number: context.issue.number,
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              body: comment,
-            });