Revert "shared_ptr -> std::shared_ptr"

This reverts commit 7074f35e4b.

Minecraft.Client/DistanceChunkSorter.h

@@ -2,12 +2,12 @@
 class Entity;
 class Chunk;
 
-class DistanceChunkSorter : public std::binary_function<const Chunk *,const Chunk *,bool>
+class DistanceChunkSorter : public std::binary_function<const Chunk *,const Chunk *,bool> 
 {
 private:
 	double ix, iy, iz;
 
 public:
-    DistanceChunkSorter(std::shared_ptr<Entity> player);
+    DistanceChunkSorter(shared_ptr<Entity> player);
 	bool operator()(const Chunk *a, const Chunk *b) const;
 };