Bug#904592: predict-gsat: No executable is included

[Christoph Berg <myon@debian.org>]

Re: A. Maitland Bottoms 2019-01-12 <[🔎] 20190112115055.53b92d32@216-Moncure.Alexandria.VA.US>
> But...
> There might be curses interface fans who would mourn its removal, but
> the codebase has never been easy to adapt.
> 
> There is a voice mode in predict that I think is still on the TODO list
> to migrate to gpredict.
> 
> So...
> I won't stand in the way of a consensus to remove predict...
> I find myself using gpredict or even Python sgp4 rather than predict.

Let's remove it then. Reintroducing it is easy enough.

Thanks,
Christoph