feat(be) : Drefactor¨ãrefactor � 않는 코드 제거

Author: beekeeper24

src/main/kotlin/com/back/koreaTravelGuide/domain/userChat/chatroom/service/ChatRoomService.kt

@@ -12,7 +12,6 @@ class ChatRoomService(
     private val roomRepository: ChatRoomRepository,
     private val messageRepository: ChatMessageRepository,
 ) {
-
     @Transactional
     fun exceptOneToOneRoom(
         guideId: Long,