[chusan] Delete unnecessary field in GameCharge

src/main/java/icu/samnyan/aqua/sega/chusan/model/gamedata/GameCharge.java

@@ -44,9 +44,5 @@ public class GameCharge implements Serializable {
     private LocalDateTime saleStartDate;
 
     private LocalDateTime saleEndDate;
-
-    @JsonInclude
-    @Transient
-    private String remarks = null;
-
+    
 }