remove unneeded xray module

modules/xray.nix

@@ -1,78 +0,0 @@
-{ config, lib, pkgs, ... }:
-with lib; {
-  options = {
-    services.xray = {
-      enable = mkOption {
-        type = types.bool;
-        default = false;
-        description = ''
-          Whether to run xray server.
-          Either <literal>settingsFile</literal> or <literal>config</literal> must be specified.
-        '';
-      };
-      package = mkOption {
-        type = types.package;
-        default = pkgs.xray;
-        defaultText = literalExpression "pkgs.xray";
-        description = ''
-          Which xray package to use.
-        '';
-      };
-      settingsFile = mkOption {
-        type = types.nullOr types.str;
-        default = null;
-        example = "/etc/xray/config.json";
-        description = ''
-          The absolute path to the configuration file.
-          Either <literal>settingsFile</literal> or <literal>config</literal> must be specified.
-        '';
-      };
-      config = mkOption {
-        type = types.nullOr (types.attrsOf types.unspecified);
-        default = null;
-        example = {
-          inbounds = [{
-            port = 1080;
-            listen = "127.0.0.1";
-            protocol = "http";
-          }];
-          outbounds = [{
-            protocol = "freedom";
-          }];
-        };
-        description = ''
-          The configuration object.
-          Either `settingsFile` or `config` must be specified.
-        '';
-      };
-    };
-  };
-
-  config = let
-    cfg = config.services.xray;
-    settingsFile = if cfg.settingsFile != null
-      then cfg.settingsFile
-      else pkgs.writeTextFile {
-        name = "xray.json";
-        text = builtins.toJSON cfg.config;
-        checkPhase = ''
-          ${cfg.package}/bin/xray run -test -format=json -config $out
-        '';
-      };
-  in mkIf cfg.enable {
-    assertions = [
-      {
-        assertion = (cfg.settingsFile == null) != (cfg.config == null);
-        message = "Either but not both `settingsFile` and `config` should be specified for xray.";
-      }
-    ];
-    systemd.services.xray = {
-      description = "Xray Daemon";
-      after = [ "network.target" ];
-      wantedBy = [ "multi-user.target" ];
-      serviceConfig = {
-        ExecStart = "${cfg.package}/bin/xray run -format=json -config ${settingsFile}";
-      };
-    };
-  };
-}