Replaced all remaining ACE based Singletons

Replaced ACE base AutoPtr class with shared_ptr
Note: worldserver currently broken due to MapUpdater threading failure (ACE ofc, what else could it be)

src/server/game/Handlers/AddonHandler.cpp

@@ -22,10 +22,6 @@
 #include "Opcodes.h"
 #include "Log.h"
 
-AddonHandler::AddonHandler() { }
-
-AddonHandler::~AddonHandler() { }
-
 bool AddonHandler::BuildAddonPacket(WorldPacket* source, WorldPacket* target)
 {
     ByteBuffer AddOnPacked;