nixos/public-inbox: remove unused indexing code

                ${pkgs.git}/bin/git config core.sharedRepository 0640

              fi

            '') cfg.inboxes

            ) + ''

            shopt -s nullglob

            for inbox in ${stateDir}/inboxes/*/; do

              # This should be idempotent, but only do it for new

              # inboxes anyway because it's only needed once, and could

              # be slow for large pre-existing inboxes.

              ls -1 "$inbox" | grep -q '^xap' ||

              ${cfg.package}/bin/public-inbox-index "$inbox"

            done

          '';

            );

          serviceConfig = {

            Type = "oneshot";

            RemainAfterExit = true;