nixos/blade-router: disable routes-VRRP

This is no longer needed; I think actually it was some of the NixOS default
reverse-path filtering that was throwing me for a loop after all and nothing to
do with what was going on with Veloxserv.

ops/nixos/lib/blade-router.nix

@@ -4,28 +4,7 @@
 
 { lib, config, pkgs, ... }:
 with lib;
-let
-  notifyBird = pkgs.writeScript "blade-router-vrrp-bird.sh" ''
-    #!${pkgs.runtimeShell}
-
-    ENDSTATE=$3
-    NAME=$2
-    TYPE=$1
-
-    BIRDC=${pkgs.bird2}/bin/birdc
-
-    case $ENDSTATE in
-        "MASTER") $BIRDC enable export4
-                  $BIRDC enable export6
-                  exit 0
-                  ;;
-        *)        $BIRDC disable export4
-                  $BIRDC disable export6
-                  exit 0
-                  ;;
-    esac
-  '';
-in {
+{
   imports = [
     ../lib/bgp.nix
   ];
@@ -157,7 +136,6 @@ in {
             mgmtGateway4
             mgmtGateway6
           }
-          notify ${notifyBird} bird2
         }
       '';
     };