Fix warnings for Elixir 1.18

Author: rrrene

.tool-versions

@@ -1,2 +1,2 @@
 erlang 27.0
-elixir 1.17.3
+elixir 1.18.0-rc.0

lib/credo/cli/command/categories/categories_output.ex

@@ -1,13 +1,12 @@
 defmodule Credo.CLI.Command.Categories.CategoriesOutput do
   @moduledoc false
 
-  use Credo.CLI.Output.FormatDelegator,
-    default: Credo.CLI.Command.Categories.Output.Default,
-    json: Credo.CLI.Command.Categories.Output.Json
-
   def print_categories(exec, categories) do
     format_mod = format_mod(exec)
 
     format_mod.print(exec, categories)
   end
+
+  defp format_mod(%{format: "json"}), do: Credo.CLI.Command.Categories.Output.Json
+  defp format_mod(%{format: nil}), do: Credo.CLI.Command.Categories.Output.Default
 end

lib/credo/cli/command/info/info_output.ex

@@ -1,10 +1,6 @@
 defmodule Credo.CLI.Command.Info.InfoOutput do
   @moduledoc false
 
-  use Credo.CLI.Output.FormatDelegator,
-    default: Credo.CLI.Command.Info.Output.Default,
-    json: Credo.CLI.Command.Info.Output.Json
-
   alias Credo.CLI.Output.UI
 
   def print(exec, info) do
@@ -13,6 +9,9 @@ defmodule Credo.CLI.Command.Info.InfoOutput do
     format_mod.print(exec, info)
   end
 
+  defp format_mod(%{format: "json"}), do: Credo.CLI.Command.Info.Output.Json
+  defp format_mod(%{format: nil}), do: Credo.CLI.Command.Info.Output.Default
+
   def print_help(exec) do
     usage = ["Usage: ", :olive, "mix credo info [options]"]