Commit a83d41867c (package/libopenssl: add option to enable some
features) made md5 an optional feature.
However, md5 has not been optional since 1.1.0, released in 2016.
Drop that option.
Fixes:
- http://autobuild.buildroot.net/results/9d79c9f313ff989449e9b47c1ff0afd3a167fd2d/
Reported-by: "Weber, Matthew L Collins" <Matthew.Weber@collins.com>
Reviewed-by: "Matthew Weber" <Matthew.Weber@collins.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>