contrib/vcpkg-ports: remove openssl port

contrib/vcpkg-ports: remove openssl port

MSFT has merged PR to vcpkg which
added OPENSSL_NO_AUTOLOAD_CONFIG option

  https://github.com/microsoft/vcpkg/pull/18389

This means that we don't need to have our own openssl port
and instead we just add

  set(OPENSSL_NO_AUTOLOAD_CONFIG ON)

to our custom triplets.

Signed-off-by: Lev Stipakov <lev@openvpn.net>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20210628080832.510-1-lstipakov@gmail.com>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg22616.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
(cherry picked from commit 7e33127d566da6dc4e412c11a445be74a542729e)