feat: remove experience

Minecraft.Client/SurvivalMode.h

@@ -28,5 +28,4 @@ public:
 	virtual shared_ptr<Player> createPlayer(Level *level);
     virtual void tick();
 	virtual bool useItemOn(shared_ptr<Player> player, Level *level, shared_ptr<ItemInstance> item, int x, int y, int z, int face, bool bTestUseOnOnly=false, bool *pbUsedItem=NULL);
-	virtual bool hasExperience();
 };