Reverts the LOW-severity dead-import removal (require('fs')/require('path'))
that changed the file hash and broke 9 golden-install-parity fixtures. The
golden test computes per-runtime hashes of installed hook files; regenerating
all 9 fixtures for a cosmetic cleanup is disproportionate. Dead imports are
harmless (Node caches built-in requires) — noted as a follow-up nit.