nix-cache: remove unused Gitea Actions runner

The actions runner on nix-cache01 was never actively used.
Removing it before migrating to nix-cache02.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

services/actions-runner/default.nix

@@ -1,57 +0,0 @@
-{ pkgs, config, ... }:
-{
-  vault.secrets.actions-token = {
-    secretPath = "hosts/nix-cache01/actions-token";
-    extractKey = "token";
-    outputDir = "/run/secrets/actions-token-1";
-    services = [ "gitea-runner-actions1" ];
-  };
-
-  virtualisation.podman = {
-    enable = true;
-    dockerCompat = true;
-  };
-
-  services.gitea-actions-runner.instances = {
-    actions1 = {
-      enable = true;
-      tokenFile = "/run/secrets/actions-token-1";
-      name = "actions1.home.2rjus.net";
-      settings = {
-        log = {
-          level = "debug";
-        };
-
-        runner = {
-          file = ".runner";
-          capacity = 4;
-          timeout = "2h";
-          shutdown_timeout = "10m";
-          insecure = false;
-          fetch_timeout = "10s";
-          fetch_interval = "30s";
-        };
-
-        cache = {
-          enabled = true;
-          dir = "/var/cache/gitea-actions1";
-        };
-
-        container = {
-          privileged = false;
-        };
-      };
-      labels =
-        builtins.map (n: "${n}:docker://gitea/runner-images:${n}") [
-          "ubuntu-latest"
-          "ubuntu-latest-slim"
-          "ubuntu-latest-full"
-        ]
-        ++ [
-          "homelab"
-        ];
-
-      url = "https://git.t-juice.club";
-    };
-  };
-}