Move to better performing minecraft server implementation

hosts/gatekeeper/configuration.nix

@@ -123,14 +123,6 @@
       host = "nonat.net.clerie.de";
       port = 22;
     };
-    tcpPorts."25567" = {
-      host = "minecraft-1.net.clerie.de";
-      port = 25567;
-    };
-    tcpPorts."25568" = {
-      host = "minecraft-1.net.clerie.de";
-      port = 25568;
-    };
     tcpPorts."25569" = {
       host = "minecraft-2.net.clerie.de";
       port = 25565;

hosts/minecraft-2/configuration.nix

@@ -32,6 +32,7 @@ in {
     enable = true;
     eula = true;
     dataDir = "/var/lib/minecraft-server";
+    package = pkgs.papermc;
     jvmOpts = "-Xmx4G -Xms1G";
   };