Remove checkboxes from deprecation automation (#15720)

Author: jaydeluca

.github/workflows/pr-automation-comments.yml

@@ -93,9 +93,9 @@ jobs:
                 "- Any migration guidance",
                 "",
                 "### 📋 Checklist",
-                "- [ ] Deprecation details added to the PR description",
-                "- [ ] Deprecation is documented in the changelog entry for the next release",
-                "- [ ] Consider adding deprecation warnings in code/documentation",
+                "- Deprecation details added to the PR description",
+                "- Deprecation is documented in the changelog entry for the next release",
+                "- Consider adding deprecation warnings in code/documentation",
                 "",
                 "Your deprecation notes will be included in the release notes to help users prepare for future changes.",
                 "",