Tweaks to clear_config calls in tests in order to prevent side effects on config during test suite execution.

test/plugs/user_enabled_plug_test.exs

@@ -8,6 +8,8 @@ defmodule Pleroma.Plugs.UserEnabledPlugTest do
   alias Pleroma.Plugs.UserEnabledPlug
   import Pleroma.Factory
 
+  clear_config([:instance, :account_activation_required])
+
   test "doesn't do anything if the user isn't set", %{conn: conn} do
     ret_conn =
       conn
@@ -18,7 +20,6 @@ defmodule Pleroma.Plugs.UserEnabledPlugTest do
 
   test "with a user that's not confirmed and a config requiring confirmation, it removes that user",
        %{conn: conn} do
-    old = Pleroma.Config.get([:instance, :account_activation_required])
     Pleroma.Config.put([:instance, :account_activation_required], true)
 
     user = insert(:user, confirmation_pending: true)
@@ -29,8 +30,6 @@ defmodule Pleroma.Plugs.UserEnabledPlugTest do
       |> UserEnabledPlug.call(%{})
 
     assert conn.assigns.user == nil
-
-    Pleroma.Config.put([:instance, :account_activation_required], old)
   end
 
   test "with a user that is deactivated, it removes that user", %{conn: conn} do