bitcoind: remove banlist loader

Gmaxwell's banlist (https://people.xiph.org/~greg/banlist.cli.txt) is
no longer maintained and hasn't been updated since 2 years.

modules/bitcoind.nix

@@ -428,31 +428,6 @@ in {
         // optionalAttrs zmqServerEnabled nbLib.allowNetlink;
     };
 
-    # Use this to update the banlist:
-    # wget https://people.xiph.org/~greg/banlist.cli.txt
-    systemd.services.bitcoind-import-banlist = {
-      description = "Bitcoin daemon banlist importer";
-      wantedBy = [ "bitcoind.service" ];
-      bindsTo = [ "bitcoind.service" ];
-      after = [ "bitcoind.service" ];
-      script = ''
-        cd ${cfg.cli}/bin
-        echo "Importing node banlist..."
-        cat ${./banlist.cli.txt} | while read line; do
-          if ! err=$(eval "$line" 2>&1) && [[ $err != *already\ banned* ]]; then
-            # unexpected error
-            echo "$err"
-            exit 1
-          fi
-        done
-      '';
-      serviceConfig = nbLib.defaultHardening // {
-        User = cfg.user;
-        Group = cfg.group;
-        ReadWritePaths = [ cfg.dataDir ];
-      } // nbLib.allowLocalIPAddresses;
-    };
-
     users.users.${cfg.user} = {
       isSystemUser = true;
       group = cfg.group;

modules/netns-isolation.nix

@@ -303,7 +303,6 @@ in {
         netns.bitcoind.address
       ] ++ map (n: netns.${n}.address) netns.bitcoind.availableNetns;
     };
-    systemd.services.bitcoind-import-banlist.serviceConfig.NetworkNamespacePath = "/var/run/netns/nb-bitcoind";
 
     services.clightning.address = netns.clightning.address;