remove dead code

hosts/riscbert/default.nix

@@ -1,7 +1,6 @@
 { config, pkgs, ... }:
 {
   boot = {
-    loader.generic-extlinux-compatible.enable = true;
     kernelParams = [
       "verbose" "shell_on_fail"
       "elevator=deadline"

modules/microvm.nix

@@ -2,11 +2,6 @@
 let
   inherit (config.c3d2.deployment) server;
   serverFQDN = "${server}.cluster.zentralwerk.org";
-  serverConfig = zentralwerk.lib.config.site.hosts.${config.c3d2.deployment.server};
-  serverBridges = builtins.attrNames (
-    lib.filterAttrs (_: { type, ... }: type == "bridge")
-      serverConfig.interfaces
-  );
 in
 {
   options.c3d2.deployment = with lib; {
@@ -83,36 +78,5 @@ in
           socket = "${tag}.socket";
         }) config.c3d2.deployment.mounts;
     };
-
-    systemd.services."microvm-zfs-datasets@" = {
-      description = "Create ZFS datasets for MicroVM '%i'";
-      before = [ "microvm-virtiofsd@%i.service" ];
-      after = [ "local-fs.target" ];
-      partOf = [ "microvm@%i.service" ];
-      unitConfig.ConditionPathExists = "/var/lib/microvms/%i/current/share/microvm/virtiofs";
-      serviceConfig = {
-        Type = "oneshot";
-        RemainAfterExit = true;
-        WorkingDirectory = "/var/lib/microvms/%i";
-        SyslogIdentifier = "microvm-zfs-datasets@%i";
-      };
-      scriptArgs = "%i";
-      script = ''
-        zfsExists() {
-          zfs list $1 >/dev/null 2>/dev/null
-        }
-
-        NAME="$1"
-        BASE=$(hostname)/vm/$NAME
-        zfsExists $BASE || \
-          zfs create $BASE
-        for d in current/share/microvm/virtiofs/*; do
-          SOURCE=$(cat $d/source)
-          MNT=$(pwd)/$SOURCE
-          zfsExists $BASE/$d || \
-            zfs create -o mountpoint=$MNT $BASE/$d
-        done
-      '';
-    };
   };
 }