Removed unwanted dependencies

Author: vishnuv688

packages/app/package.json

@@ -32,18 +32,15 @@
   "author": "Christian Bromann <[email protected]>",
   "license": "MIT",
   "devDependencies": {
-    "@open-wc/testing": "^4.0.0",
     "@tailwindcss/postcss": "^4.1.18",
     "@wdio/reporter": "9.18.0",
     "autoprefixer": "^10.4.21",
-    "happy-dom": "^16.8.0",
     "postcss": "^8.5.6",
     "postcss-import": "^16.1.1",
     "rollup": "^4.47.0",
     "stylelint": "^16.24.0",
     "stylelint-config-recommended": "^17.0.0",
     "stylelint-config-tailwindcss": "^1.0.0",
-    "tailwindcss": "~4.1.18",
-    "vitest": "^4.0.16"
+    "tailwindcss": "~4.1.18"
   }
 }