Fix warnings in object tests

test/object/containment_test.exs

@@ -3,7 +3,6 @@ defmodule Pleroma.Object.ContainmentTest do
 
   alias Pleroma.User
   alias Pleroma.Object.Containment
-  alias Pleroma.Web.ActivityPub.ActivityPub
 
   import Pleroma.Factory
 
@@ -45,7 +44,7 @@ defmodule Pleroma.Object.ContainmentTest do
     end
 
     test "users cannot be collided through fake direction spoofing attempts" do
-      user =
+      _user =
         insert(:user, %{
           nickname: "rye@niu.moe",
           local: false,

test/object/fetcher_test.exs

 defmodule Pleroma.Object.FetcherTest do
   use Pleroma.DataCase
 
-  alias Pleroma.{Activity, Object}
+  alias Pleroma.Activity
+  alias Pleroma.Object
   alias Pleroma.Object.Fetcher
 
-  import Pleroma.Factory
-
   describe "actor origin containment" do
     test "it rejects objects with a bogus origin" do
       {:error, _} = Fetcher.fetch_object_from_id("https://info.pleroma.site/activity.json")