Comment 6 for bug 831702

I don't think that this is a good fix and the author of the plug-in seemed to agree when I told him about it. It removes all satellites if the date falls before 1957, but it doesn't put them back if the date returns to the present.

So I've removed the code. As this "problem" is related to the problem of satellite orbits quickly becoming outdated, I suggest leaving the solution to the author of the Satellites plug-in, Matthew Gates.