feat!: Remove support for k3s and go full-on Talos (#1482)

bootstrap/templates/kubernetes/apps/kube-system/metrics-server/app/helmrelease.yaml.j2

@@ -25,9 +25,6 @@ spec:
       - --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
       - --kubelet-use-node-status-port
       - --metric-resolution=15s
-      #% if bootstrap_distribution in ["k3s"] %#
-      - --kubelet-insecure-tls
-      #% endif %#
     metrics:
       enabled: true
     serviceMonitor: