Remove old Node compat code

Editor assessment

A refactor message with genuinely useful provenance. The subject states the deletion plainly, and the body cites the introducing commit hash and explains the code existed for compat mode, removed in v1.26, making it dead weight. That level of traceability, origin commit plus removal rationale, is exactly what makes large deletions easy to review and safe to trust. The missing scope is mitigated by the explanatory body, and the refactor type correctly signals no version-relevant change. Wrapping is clean. If anything, noting explicitly that behavior is unchanged, no user-visible difference, would fully close the loop for cautious readers.