The MAPS are already installed onto your console when you install the game. In-game content such as items and mobs are NOT on the disc. The maps can only be changed by Bungie when an update is pushed. Bungie cannot get into your console and edit game data to remove them. If they wanted to remove them, they would have to push an update that overwrites the existing game data on your console. The areas shown in this thread have been around long before the game was even released. Those areas were suppose to be in the first initial release of the game. When Staten left Bungie, the story-line for Destiny had to be cut to make Activision's due date. This included in-game content. What you are seeing when you go to those areas is unfinished work that was suppose to be in the game at initial release. Those areas will now be included in future DLCs. I do not know how else I can explain it if you do not understand. I think I've explained it in the best way possible without getting too technical.