gpg-agent-ssh is an unnecessary dependency of gnupg

[Avamander]

Installing gnupg will also install and depend on gpg-agent(-ssh) which will replace ssh-agent.

This is bad due to the fact that gpg-agent-ssh takes an exclusive lock on all smartcards incorrectly yet does not actually support neither PIV or opensc-pkcs11 integration. Until gnupg/gpg-agent/scdaemon learns how to behave or adds support for PIV, it's not a viable replacement and should not be considered as such.

Meaning gpg-agent-ssh will be installed and break PIV-based SSH authentication. gpg-agent-ssh should NOT be installed unless specifically requested, the very least it should NOT be enabled in any way unless explicitly requested. It's a boneheaded nuisance of a dependency right now.

[Avamander (avamander)]

Also confirmed five years ago in this issue https://github.com/OpenSC/OpenSC/issues/953