feat(k0s): unsupport it (#1291)

Signed-off-by: Devin Buhl <devin@buhl.casa>

.devcontainer/ci/features/install.sh

@@ -25,7 +25,6 @@ for app in \
     "FiloSottile/age!!?as=age&type=script" \
     "fluxcd/flux2!!?as=flux&type=script" \
     "go-task/task!!?as=task&type=script" \
-    "k0sproject/k0sctl!!?as=k0sctl&type=script" \
     "kubecolor/kubecolor!!?as=kubecolor&type=script" \
     "kubernetes-sigs/krew!!?as=krew&type=script" \
     "kubernetes-sigs/kustomize!!?as=kustomize&type=script" \
@@ -46,7 +45,6 @@ for tool in cilium flux helm k9s kubectl kustomize talhelper talosctl; do
     $tool completion fish > /home/vscode/.config/fish/completions/$tool.fish
 done
 gh completion --shell fish > /home/vscode/.config/fish/completions/gh.fish
-k0sctl completion --shell fish > /home/vscode/.config/fish/completions/k0sctl.fish
 stern --completion fish > /home/vscode/.config/fish/completions/stern.fish
 yq shell-completion fish > /home/vscode/.config/fish/completions/yq.fish