security/pam_fprint: Remove, it's deprecated

See here: https://fprint.freedesktop.org/

pam_fprint is replaced by fprintd’s pam_fprintd module, which splits
the PAM conversation from hardware access.

It also doesn't work with the latest libfprint anymore.

Co-authored-by: Sheng-Yi Hung <aokblast@FreeBSD.org>
Signed-off-by: Daniel Schaefer <dhs@frame.work>
PR: 280749
Sponsored by: Framework Computer Inc
Sponsored by: The FreeBSD Foundation
Pull Request: https://github.com/freebsd/freebsd-ports/pull/291