refactor(layout): remove unused preferredRegion export

Author: Marfuen

apps/app/src/app/layout.tsx

@@ -76,8 +76,6 @@ const font = localFont({
   variable: '--font-general-sans',
 });
 
-export const preferredRegion = ['auto'];
-
 export default async function Layout({ children }: { children: React.ReactNode }) {
   const session = await auth.api.getSession({
     headers: await headers(),