Move NixOS switches to SSH runners

nixos/hosts/mini-pc/default.nix

@@ -75,30 +75,5 @@
     }
   '';
 
-  services.gitea-actions-runner.instances."mini-pc" = {
-    enable = true;
-    name = "mini-pc";
-    url = "https://git.ada-dev.ru";
-    tokenFile = "/etc/gitea-runner/mini-pc.token";
-    labels = [ "mini-pc" "mini-pc-nixos" ];
-  };
-
-  systemd.services."gitea-runner-mini-pc".serviceConfig = {
-    SupplementaryGroups = [ "docker" ];
-    Environment = [ "PATH=/run/current-system/sw/bin:/bin" ];
-  };
-
-  security.sudo.extraRules = [
-    {
-      users = [ "gitea-runner" ];
-      commands = [
-        {
-          command = "/run/current-system/sw/bin/nixos-rebuild";
-          options = [ "NOPASSWD" ];
-        }
-      ];
-    }
-  ];
-
   system.stateVersion = "25.11";
 }