docs: drop Virtual-Machine.md

It documented the retired KubeVirt workflow (upload a qcow2, create the vm
in k8s-gitops, let Flux create it), which no longer exists. The general
deployment notes live in the README and the per-platform docs
(hosts/k8s/README.md for the microVMs).

README.md

@@ -27,12 +27,11 @@ This repository is home to the Nix code that builds all of my systems:
    agenix.
 2. **macOS desktops** — nix-darwin + Home Manager, sharing the same `home/` configuration with the
    NixOS desktops.
-3. **NixOS servers** — VMs running on three physical mini PCs, hosting K3s clusters,
-   monitoring, and other self-hosted services.
+3. **NixOS servers** — three physical mini PCs running the VMs (libvirt and microVMs), the K3s test
+   cluster and the self-hosted services.
 
 See [./hosts](./hosts) for the host inventory, [./outputs](./outputs) for how the flake outputs are
-composed, [./Virtual-Machine.md](./Virtual-Machine.md) for creating & managing VMs, and
-[./AGENTS.md](./AGENTS.md) for the repository conventions.
+composed, and [./AGENTS.md](./AGENTS.md) for the repository conventions.
 
 ## Why NixOS & Flakes?
 

Virtual-Machine.md

@@ -1,32 +0,0 @@
-## How to create & manage VMs (the retired KubeVirt path)
-
-> [!NOTE] KubeVirt is being retired. aquamarine runs natively on `youko` and the k3s-test
-> nodes run as [microVMs](./hosts/k8s/README.md); this document only covers the VMs that
-> are left to move (currently the Windows VM).
-
-Use `aquamarine` as an example, first build and upload the virtual machine's qcow2 image to the file
-server:
-
-```shell
-just upload-vm aquamarine
-```
-
-Then create the virtual machine by creating a yaml file at
-[ryan4yin/k8s-gitops](https://github.com/ryan4yin/k8s-gitops/tree/main/vms), set the
-`spec.dataVolumeTemplates[0].source.http.url` to the uploaded file's URL, and fluxcd will
-automatically apply the changes, then a virtual machine named `aquamarine` will be created in the
-VM cluster.
-
-Once the virtual machine `aquamarine` is created, we can deploy updates to it with the following
-commands:
-
-```shell
-just col aquamarine
-just col shoryu
-
-# Set a configuration for the next boot instead of switching immediately
-just col aquamarine boot
-```
-
-If you're not familiar with remote deployment, please read this tutorial first:
-[Remote Deployment - NixOS & Flakes Book](https://nixos-and-flakes.thiscute.world/best-practices/remote-deployment)