lib: remove outdated optimizations

PR-URL: https://github.com/nodejs/node/pull/27380


Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com>