chore: ledger 삭제하는 코드를 주석 처리한다.

src/main/java/com/moneymong/domain/agency/service/AgencyService.java

@@ -142,7 +142,7 @@ public void delete(Long userId, Long agencyId) {
         Agency agency = agencyRepository.findById(agencyId)
             .orElseThrow(() -> new NotFoundException(ErrorCode.AGENCY_NOT_FOUND));
 
-        ledgerService.deleteLedger(agencyId);
+//        ledgerService.deleteLedger(agencyId);
 
         agencyRepository.delete(agency);
     }