chore(weather): remove unused vitest dependency (#7275)

Author: trivikr

private/weather/package.json

@@ -65,8 +65,7 @@
     "concurrently": "7.0.0",
     "downlevel-dts": "0.10.1",
     "rimraf": "3.0.2",
-    "typescript": "~5.8.3",
-    "vitest": "^0.33.0"
+    "typescript": "~5.8.3"
   },
   "engines": {
     "node": ">=18.0.0"