Remove obsolete module

nixos/roles/modules/go-neb.nix

@@ -1,55 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
-# TODO: Replace by upstreamed module
-
-let
-  cfg = config.services.go-neb;
-
-  configFile = pkgs.writeText "config.yml" (builtins.toJSON cfg.config);
-in {
-  options.services.go-neb = {
-    enable = mkEnableOption "Extensible matrix bot written in Go";
-
-    bindAddress = mkOption {
-      type = types.str;
-      description = "Port (and optionally address) to listen on.";
-      default = ":4050";
-    };
-
-    baseUrl = mkOption {
-      type = types.str;
-      description = "Public-facing endpoint that can receive webhooks.";
-    };
-
-    config = mkOption {
-      type = types.attrs;
-      description = ''
-        Your <filename>config.yaml</filename> as a Nix attribute set.
-        See <link xlink:href="https://github.com/matrix-org/go-neb/blob/master/config.sample.yaml">config.sample.yaml</link>
-        for possible options.
-      '';
-    };
-  };
-
-  config = mkIf cfg.enable {
-    systemd.services.go-neb = {
-      description = "Extensible matrix bot written in Go";
-      after = [ "network.target" ];
-      wantedBy = [ "multi-user.target" ];
-
-      serviceConfig = {
-        Environment = [
-          "BASE_URL=${cfg.baseUrl}"
-          "BIND_ADDRESS=${cfg.bindAddress}"
-          "CONFIG_FILE=${configFile}"
-        ];
-        ExecStart = "${pkgs.go-neb}/bin/go-neb";
-        DynamicUser = true;
-      };
-    };
-  };
-
-  meta.maintainers = with maintainers; [ hexa maralorn ];
-}