(fix): remove unused dependencies

(fix): remove dead code
(fix): remove unused exports

apps/electron/package.json

@@ -26,9 +26,7 @@
     "validate:raw": "bun run build && bun run package:linux:raw",
     "validate": "if command -v nix >/dev/null 2>&1 && [ -z \"$IN_NIX_SHELL\" ]; then nix develop --command bun run validate:raw; else bun run validate:raw; fi"
   },
-  "dependencies": {
-    "electron-updater": "^6.6.2"
-  },
+  "dependencies": {},
   "devDependencies": {
     "@types/node": "^25.9.1",
     "electron": "^39.2.7",