Revert "shared_ptr -> std::shared_ptr"

This reverts commit 7074f35e4b.

Minecraft.Client/ExperienceOrbRenderer.h

@@ -12,6 +12,6 @@ public:
 
 	ExperienceOrbRenderer();
 
-	void render(std::shared_ptr<Entity> _orb, double x, double y, double z, float rot, float a);
+	void render(shared_ptr<Entity> _orb, double x, double y, double z, float rot, float a);
 	void blit(int x, int y, int sx, int sy, int w, int h);
 };