Revert "lib: Tolerate D-Bus disconnect after reloading systemd"
Revert "lib: Tolerate D-Bus disconnect after reloading systemd"

The systemd bug got fixed three years ago.

mvollmer/cockpit,cockpit-project/cockpit,mvollmer/cockpit,cockpit-project/cockpit,martinpitt/cockpit,martinpitt/cockpit,martinpitt/cockpit,mvollmer/cockpit,cockpit-project/cockpit,mvollmer/cockpit,cockpit-project/cockpit,martinpitt/cockpit,mvollmer/cockpit,martinpitt/cockpit,cockpit-project/cockpit