Revert "feat(GitHub): add support for 'discussion' label on issues (#…

…5865)" (#5866)

This reverts commit c78516a.

.github/workflows/issue-comment.yml

@@ -27,7 +27,7 @@ jobs:
         run: |
           gh issue edit $ISSUE_NUMBER --repo $REPOSITORY_NAME --remove-label "pending-community-response"
       - name: Add pending-maintainer-response when new community comment received
-        if: ${{ !contains(fromJSON('["MEMBER", "OWNER"]'), github.event.comment.author_association) && !contains(github.event.issue.labels.*.name, 'discussion') }}
+        if: ${{ !contains(fromJSON('["MEMBER", "OWNER"]'), github.event.comment.author_association) }}
         shell: bash
         run: |
           gh issue edit $ISSUE_NUMBER --repo $REPOSITORY_NAME --add-label "pending-maintainer-response"