Remove legacy requirements (pyOpenSSL 1.17.x)
Remove legacy requirements (pyOpenSSL 1.17.x)

"Removed pyasn1 and ndg-httpsclient from dependencies used for
PyOpenSSL. We now use cryptography and idna, both of which are already
dependencies of PyOpenSSL. (PR #930)"

aptivate/ckanext-syndicate,aptivate/ckanext-syndicate