[arch-general] Dropping ipw3945 from core

[Jakub Schmidtke]

Thomas Bächler wrote:

> Is there anyone who cannot use iwl3945 instead
> of ipw3945?

I was having various problems with getting iwl3945 to work.
Most of the times I wasn't able to associate to any network before I
run 'iwlist scan' manually. Also, when I finally connected, I got
disconnected every couple of minutes. Activity LED is missing as well.