ci: Remove slack notice for post-build workflow (#28502)

It's complaining on every merged PR and we can't fix it until GitHub gets back to us to say what is going wrong.
Automattic · Jan 20, 2023 · c6e2820 · c6e2820
1 parent 587b990
commit c6e2820
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/.github/workflows/slack-workflow-failed.yml b/.github/workflows/slack-workflow-failed.yml
@@ -8,7 +8,6 @@ on:
       - Build Docker
       - Tests
       - Gardening
-      - Post-Build
       - PR is up-to-date
     branches: [ 'trunk', 'prerelease', '*/branch-*' ]