The SSH server feature used to be part of core (well, a module, but part of
the war) and has been moved into a plugin recently. So, functionality wise,
nothing changed for you, it's just that now it's visible (and can be
disabled).
Features are sometimes detached (or split off) from Jenkins core
Why is the "SSH Server" plugin installed, and apparently not removable? What
core functionality does it add other than permitting some sort of SSH access to
run commands? It defaults to "disabled" in global security (that's good at
least), but why must it be there in the first place if such
