[chore] remove unusable files

src/app/(main)/preference/general/page.tsx

@@ -1,10 +1,9 @@
 "use client"
 import { appStore } from "@/store/app"
-import { useEffect } from "react"
 import { useSnapshot } from "valtio"
 
 export default function Page() {
-  appStore.start()
+  void appStore.start()
   const app = useSnapshot(appStore.state)
 
   return (