Revert "Project modernization (#630)"

This code was not tested and breaks in Release builds, reverting to restore
functionality of the nightly. All in-game menus do not work and generating
a world crashes.

This reverts commit a9be52c41a.

Minecraft.World/SetCreativeModeSlotPacket.h

@@ -18,6 +18,6 @@ class SetCreativeModeSlotPacket : public Packet, public enable_shared_from_this<
 
 
 public:
-	static shared_ptr<Packet> create() { return std::make_shared<SetCreativeModeSlotPacket>(); }
+	static shared_ptr<Packet> create() { return shared_ptr<Packet>(new SetCreativeModeSlotPacket()); }
 	virtual int getId() { return 107; }
 };