nixos/systemd: CPUAccounting is deprecated

systemd 258 has the following changes noted in systemd.resource-control(5):

> `CPUAccounting=` setting is deprecated, because it is always available on the unified cgroup hierarchy and such setting has no effect.

This commit removes it from the three services using it directly, as well as one instance of example text.

Signed-off-by: benaryorg <binary@benary.org>

nixos/modules/services/cluster/kubernetes/kubelet.nix

@@ -364,7 +364,6 @@ in
         '';
         serviceConfig = {
           Slice = "kubernetes.slice";
-          CPUAccounting = true;
           MemoryAccounting = true;
           Restart = "on-failure";
           RestartSec = "1000ms";

nixos/modules/services/scheduling/prefect.nix

@@ -173,7 +173,6 @@ in
           ProtectKernelLogs = true;
           ProtectControlGroups = true;
           MemoryAccounting = true;
-          CPUAccounting = true;
 
           ExecStart = "${pkgs.prefect}/bin/prefect server start --host ${cfg.host} --port ${toString cfg.port}";
           Restart = "always";
@@ -216,7 +215,6 @@ in
           ProtectKernelLogs = true;
           ProtectControlGroups = true;
           MemoryAccounting = true;
-          CPUAccounting = true;
           ExecStart = ''
             ${pkgs.prefect}/bin/prefect worker start \
               --pool ${poolName} \

nixos/modules/system/boot/systemd/user.nix

@@ -71,7 +71,7 @@ in
     systemd.user.extraConfig = mkOption {
       default = "";
       type = types.lines;
-      example = "DefaultCPUAccounting=yes";
+      example = "DefaultTimeoutStartSec=60";
       description = ''
         Extra config options for systemd user instances. See {manpage}`systemd-user.conf(5)` for
         available options.

nixos/modules/virtualisation/waagent.nix

@@ -370,7 +370,6 @@ in
         Type = "simple";
         Restart = "always";
         Slice = "azure.slice";
-        CPUAccounting = true;
         MemoryAccounting = true;
       };
     };