k0: remove bc01n03 from nix defs

This only affects ETCD_INITIAL_* env vars, so is is effectively a no-op.

Deployed to prod.

Change-Id: Ic9118e17b088d1b58ebaf1ac0708a1ee6fcf2c06
diff --git a/cluster/nix/defs-machines.nix b/cluster/nix/defs-machines.nix
index 4c50f67..da9150c 100644
--- a/cluster/nix/defs-machines.nix
+++ b/cluster/nix/defs-machines.nix
@@ -25,19 +25,10 @@
     mgmtIf = "eno1";
     stateVersion = "18.09";
   }
-  rec {
-    name = "bc01n03";
-    threads = 16;
-    fqdn = "${name}.hswaw.net";
-    ipAddr = "185.236.240.37";
-    ipAddrBits = 28;
-    gw = "185.236.240.33";
-    podNet = "10.10.18.0/24";
-    diskBoot = "/dev/disk/by-id/scsi-360024e8078a8fa0023b1787e0605a3e0";
-    fsRoot = "/dev/disk/by-uuid/afc05836-c9b3-4d7e-b0a2-3ebfe2336d4f";
-    mgmtIf = "eno1";
-    stateVersion = "18.09";
-  }
+  # Tombstone - bc01n03 suffered from hardware failure on 2021/01/10.
+  # rec {
+  #   name = "bc01n03";
+  # }
   rec {
     name = "dcr01s22";
     threads = 48;