Remove unused argument for GameMessage::MSG_QUEUE_UPGRADE

[Caball009]

GeneralsGameCode/Core/GameEngine/Source/GameLogic/System/GameLogicDispatch.cpp

Lines 1406 to 1417 in ed7e96f

	case GameMessage::MSG_QUEUE_UPGRADE:
	{
	const UpgradeTemplate *upgradeT = TheUpgradeCenter->findUpgradeByKey( (NameKeyType)(msg->getArgument( 1 )->integer) );
	if (!upgradeT) // sanity
	break;
	if (currentlySelectedGroup)
	currentlySelectedGroup->queueUpgrade( upgradeT );
	break;
	}

The first argument for GameMessage::MSG_QUEUE_UPGRADE is unused and can be cleaned up without retail compatibility.