Revert "shared_ptr -> std::shared_ptr"

This reverts commit 7074f35e4b.

Minecraft.World/OwnerHurtByTargetGoal.cpp

@@ -12,7 +12,7 @@ OwnerHurtByTargetGoal::OwnerHurtByTargetGoal(TamableAnimal *tameAnimal) : Target
 bool OwnerHurtByTargetGoal::canUse()
 {
 	if (!tameAnimal->isTame()) return false;
-	std::shared_ptr<Mob> owner = tameAnimal->getOwner();
+	shared_ptr<Mob> owner = tameAnimal->getOwner();
 	if (owner == NULL) return false;
 	ownerLastHurtBy = weak_ptr<Mob>(owner->getLastHurtByMob());
 	return canAttack(ownerLastHurtBy.lock(), false);