Fix i18n routing: use shared routing config

src/middleware.ts

@@ -1,11 +1,5 @@
 import createMiddleware from "next-intl/middleware";
-import { defineRouting } from 'next-intl/routing';
+import { routing } from './i18n/routing';
-
-const routing = defineRouting({
-  locales: ['sr', 'en'],
-  defaultLocale: 'sr',
-  localePrefix: 'as-needed'
-});
 
 export default createMiddleware(routing);