refactor(routes): remove unused interestRepository provider

- Remove the unused provider for DataRepository<Interest>
- This change simplifies the middleware setup and removes unnecessary code

Author: fulleni

routes/_middleware.dart

@@ -134,11 +134,6 @@ Handler middleware(Handler handler) {
                   (_) => deps.pushNotificationDeviceRepository,
                 ),
               )
-              .use(
-                provider<DataRepository<Interest>>(
-                  (_) => deps.interestRepository,
-                ),
-              )
               .use(
                 provider<DataRepository<InAppNotification>>(
                   (_) => deps.inAppNotificationRepository,