Fix warnings

Author: josevalim

lib/ex_doc/retriever.ex

@@ -338,6 +338,6 @@ defmodule ExDoc.Retriever do
   defp source_link(%{path: _, url: nil}, _line), do: nil
 
   defp source_link(source, line) do
-    Utils.source_url_pattern(source.url, source.path |> Path.relative_to(File.cwd!()), line)
+    Utils.source_url_pattern(source.url, path_relative_to_cwd(source.path, []), line)
   end
 end

test/mix/tasks/docs_test.exs

@@ -7,8 +7,6 @@ defmodule Mix.Tasks.DocsTest do
 
   import ExUnit.CaptureIO
 
-  alias ExDoc.Utils
-
   @moduletag :tmp_dir
 
   def run(context, args, opts, generator \\ &{&1, &2, &3}) do