errors: remove unused ERR_SOCKET_CANNOT_SEND error

This error is no longer used within core. This commit removes it.

PR-URL: https://github.com/nodejs/node/pull/31958
Refs: https://github.com/nodejs/help/issues/2484


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>