Refactor : 불필요한 코드 삭제

1. 상태 호이스팅으로 인해 불필요해진 로직

Author: oyj7677

app/src/main/java/nextstep/payments/ui/card/list/CardListScreen.kt

@@ -146,7 +146,6 @@ fun CardListScreenMany(
 @Preview
 @Composable
 private fun CardListScreenEmptyPreview() {
-    PaymentCardsRepository.removeAllCard()
     PaymentsTheme {
         CardListScreen(
             registeredCreditCards = RegisteredCreditCards(mutableListOf()),