misc/compat10x: remove pam_ssh.so.5 and add a dep on compat13x

It depends on libssh.so.5 which was never added to the package, which
means hasn't been functional as is. as libssh.so.5 was a private lib in
FreeBSD 10 un usr/lib/private, and also depends on other private libs
it's complicated to decide how to package it.

Remove pam_ssh.so.5 which drops the dependency on libssh

While here add a dependency on compat13x for libncurses.