fix: address warnings found by elixir 1.18 (#50)

Author: zachallaun

lib/spitfire.ex

@@ -2575,22 +2575,13 @@ defmodule Spitfire do
   #       arg
   #     )
   # will have 1 newling due to the newline after the opening paren
-  defp get_newlines(parser, kind \\ :peek)
-
-  defp get_newlines(parser, :peek) do
+  defp get_newlines(parser) do
     case peek_newlines(parser) do
       nil -> []
       nl -> [newlines: nl]
     end
   end
 
-  defp get_newlines(parser, :current) do
-    case current_newlines(parser) do
-      nil -> []
-      nl -> [newlines: nl]
-    end
-  end
-
   defp push_eoe(ast, eoe) do
     case ast do
       {t, meta, a} when not is_nil(eoe) and t != :-> ->

lib/spitfire/env.ex

@@ -316,10 +316,7 @@ defmodule Spitfire.Env do
       {:function, module, fun} ->
         expand_remote(meta, module, fun, args, state, env)
 
-      :error ->
-        expand_local(meta, fun, args, state, env)
-
-      {:error, :not_found} ->
+      {:error, _} ->
         expand_local(meta, fun, args, state, env)
     end
   end