refactor: remove unused restic-related code

backup/restic.nix

@@ -1,29 +0,0 @@
-{ config, pkgs, ... }:
-let
-  cfg = config.services.userdata;
-in
-{
-  services.restic.backups = {
-    options = {
-      passwordFile = "/etc/restic/resticPasswd";
-      repository = "s3:s3.anazonaws.com/${cfg.backup.bucket}";
-      initialize = true;
-      paths = [
-        "/var/dkim"
-        "/var/vmail"
-      ];
-      timerConfig = {
-        OnCalendar = [ "daily" ];
-      };
-      user = "restic";
-      pruneOpts = [
-        "--keep-daily 5"
-      ];
-    };
-  };
-  users.users.restic = {
-    isNormalUser = false;
-    isSystemUser = true;
-    group = "restic";
-  };
-}

configuration.nix

@@ -18,7 +18,6 @@ in
     ./social/pleroma.nix
     ./letsencrypt/acme.nix
     ./letsencrypt/resolve.nix
-    ./backup/restic.nix
     ./passmgr/bitwarden.nix
     ./webserver/nginx.nix
     ./webserver/memcached.nix

files.nix

@@ -21,7 +21,6 @@ in
       (if cfg.bitwarden.enable then "d /var/lib/bitwarden 0777 vaultwarden vaultwarden -" else "")
       (if cfg.bitwarden.enable then "d /var/lib/bitwarden/backup 0777 vaultwarden vaultwarden -" else "")
       (if cfg.pleroma.enable then "d /var/lib/pleroma 0700 pleroma pleroma - -" else "")
-      "d /var/lib/restic 0600 restic - - -"
       (if cfg.pleroma.enable then "f /var/lib/pleroma/secrets.exs 0755 pleroma pleroma - -" else "")
       "f+ /var/domain 0444 selfprivacy-api selfprivacy-api - ${domain}"
       (if cfg.bitwarden.enable then "f /var/lib/bitwarden/.env 0640 vaultwarden vaultwarden - -" else "")