Turn mob id magic numbers into constants

src/main/java/constants/game/GameConstants.java

@@ -584,10 +584,6 @@ public class GameConstants {
         return mapid >= 925030100 && mapid < 925040000;
     }
 
-    public static boolean isDojoBoss(int mobid) {
-        return mobid >= 9300184 && mobid < 9300216;
-    }
-
     public static boolean isDojoBossArea(int mapid) {
         return isDojo(mapid) && (((mapid / 100) % 100) % 6) > 0;
     }