Remove 'unlisted' handling for now.

It's just too slow (over 1 second on small systems, haven't looked at
the queries in detail yet). We'll need some other way to handle it.

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -233,7 +233,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     q = fetch_activities_query(["https://www.w3.org/ns/activitystreams#Public"], opts)
 
     q
-    |> restrict_unlisted()
+    # Too slow
+    # |> restrict_unlisted()
     |> Repo.all()
     |> Enum.reverse()
   end