fix(kubernetes): remove tailscale for now

Tailscale has issues with Cilium's socket LB. You can turn it off or
enable the bypass mode, but Cilium doesn't support pod loopback to
itself via a service without the socket LB (yet).

https://tailscale.com/kb/1236/kubernetes-operator#cilium-in-kube-proxy-replacement-mode
cilium/cilium#26733

kubernetes/core/cilium.nix

@@ -27,13 +27,6 @@
         loadBalancer.mode = "hybrid";
         endpointRoutes.enabled = true;
 
-        # Fix for Tailscale
-        # https://tailscale.com/kb/1236/kubernetes-operator#cilium-in-kube-proxy-replacement-mode
-        socketLB = {
-          enabled = true;
-          hostNamespaceOnly = true;
-        };
-
         # We use globally routable addresses for IPv6, so no NAT is needed.
         # We're running IPv6-only, but Discord still needs IPv4...
         # For now, that is accomplished with NAT64 on the host. :)