revisit rocket auto-launch configuration in 2.0

[ahicks92]

They removed auto_launch so configuring silos for this won't work anymore. The code can sit around but we need to follow up on it down the road. API request to get it back here: https://forums.factorio.com/viewtopic.php?f=28&t=118065

[LevFendi]

Adding some context:
The option to "auto launch when there is cargo" makes sense in 2.0 vanilla because you get direct science returns for launching a satellite. In SA this no longer makes sense because space science now needs to be crafted in a space station.