Add ability to set a default post expiry (#321)

[akkoma] / priv / repo / migrations / 20200314123607_config_remove_fetch_initial_posts.exs

defmodule Pleroma.Repo.Migrations.ConfigRemoveFetchInitialPosts do
  use Ecto.Migration

  def change do
    execute(
      "delete from config where config.key = ':fetch_initial_posts' and config.group = ':pleroma';",
      ""
    )
  end
end