broken link to examplee

[schinns]

the networking example linked appears to be broken: https://github.com/nerves-project/nerves_network#example-applications

I noticed that there is now a "hello_wifi" example now. Although this example doesn't seem to be using "nerves_network", and rather "vintage_net".

[curious-attempt-bunny]

See https://github.com/nerves-project/nerves_examples/commit/0001e81dfc757954bb7234f919023e39b49087c3

Remove the nerves_network example It's currently out-of-date due to the switch to vintage_net. The eventual goal is to replace it, but remove it for now to avoid confusion.