Revert "shared_ptr -> std::shared_ptr"

This reverts commit 7074f35e4b.

Minecraft.Client/ItemSpriteRenderer.h

@@ -11,7 +11,7 @@ private:
 public:
 	ItemSpriteRenderer(Item *sourceItem, int sourceItemAuxValue = 0);
 	//ItemSpriteRenderer(Item *icon);
-    virtual void render(std::shared_ptr<Entity> e, double x, double y, double z, float rot, float a);
+    virtual void render(shared_ptr<Entity> e, double x, double y, double z, float rot, float a);
 
 private:
 	void renderIcon(Tesselator *t, Icon *icon);