warning: use Mix.Config is deprecated. Use the Config module instead

[nelsonic]

warning: use Mix.Config is deprecated. Use the Config module instead
  config/config.exs:1

Lame.

• Fix it

[nelsonic]

Basically replace:

use Mix.Config

With:

import Config

Easy fix.

Read: https://hexdocs.pm/elixir/1.12/Config.html