优化

app/src/main/java/io/legado/app/data/dao/BookDao.kt

@@ -30,9 +30,8 @@ interface BookDao {
 
     @Query(
         """
-        select * from books where type != ${BookType.audio} 
-        and origin != '${BookType.local}' 
-        and ((SELECT sum(groupId) FROM book_groups where groupId > 0) & `group`) = 0
+        select * from books 
+        where ((SELECT sum(groupId) FROM book_groups where groupId > 0) & `group`) = 0
         """
     )
     fun flowNoGroup(): Flow<List<Book>>