Merge pull request #65 from ikdaman/dev

release: 0.0.18

Author: sonshn

src/main/java/com/ikdaman/domain/mybook/service/MyBookServiceImpl.java

@@ -80,11 +80,6 @@ public MyBookRes addMyBook(UUID memberId, MyBookReq dto) {
                     .build());
         }
 
-        // 한 사용자가 책장에 같은 책을 중복으로 저장할 수 없음
-        if(myBookRepository.existsMyBookByMemberIdAndBook(memberId, book)) {
-            throw new BaseException(MY_BOOK_ALREADY_EXISTS);
-        }
-
         MyBook myBook = MyBook.builder()
                 .memberId(memberId)
                 .book(book)