Revert "Fix change note check to accept changes to itself"

This reverts commit 2dca782.

Author: redsun82

.github/workflows/check-change-note.yml

@@ -24,7 +24,5 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
-          gh api 'repos/${{github.repository}}/pulls/${{github.event.number}}/files' --paginate --jq \
-            'any(.[].filename ; test("/change-notes/.*[.]md$")) or
-             all(.[].filename ; .==".github/workflows/check-change-note.yml")' |
+          gh api 'repos/${{github.repository}}/pulls/${{github.event.number}}/files' --paginate --jq 'any(.[].filename ; test("/change-notes/.*[.]md$"))' |
           grep true -c