Remove OpenSSL 1.0.2 support

Remove OpenSSL 1.0.2 support

With Centos 7/Red Hat Enterprise Linux 7 being EOL this June, the last
distributions that still support OpenSSL 1.0.2 are finally EOL. This
means we no longer need to support OpenSSL 1.0.2

Change-Id: I90875311a4e4c403e77e30b609c1878cbaaaad45
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20240514141550.17544-1-gert@greenie.muc.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg28665.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>