Revert "Merge pull request #43983 from viric/coreutils_ssl_master"

coreutils is part of stdenv, which doesn't allow openssl currently.

It's unclear that adding openssl to stdenv was intended,
but if it was it was not discussed or mentioned.

To unbreak "all the things", reverting until this
has been discussed and a proper fix has been put together.

This reverts commit df9f76c6, reversing
changes made to 585ded73.