fix lang

lib/lang.js

@@ -121,14 +121,4 @@ export const redirectUserLang = (lang, pageId) => {
       }
     }
   }
-}
-
-/**
- * 获取当前 Next.js 路由下的 locale
- * @returns 当前路由下的 locale
- */
-export function getCurrentLang() {
-  const router = useRouter()
-  let currentLang = router.locale
-  return currentLang
-}
+}