Revert "Assert on the success of enqueue before returning"

This reverts commit 16d8c8b3.
Because it breaks everything

lib/pleroma/user.ex

@@ -278,10 +278,9 @@ def register(%Ecto.Changeset{} = changeset) do
   def try_send_confirmation_email(%User{} = user) do
     if user.info.confirmation_pending &&
          Pleroma.Config.get([:instance, :account_activation_required]) do
-      :ok =
-        user
-        |> Pleroma.Emails.UserEmail.account_confirmation_email()
-        |> Pleroma.Emails.Mailer.deliver_async()
+      user
+      |> Pleroma.Emails.UserEmail.account_confirmation_email()
+      |> Pleroma.Emails.Mailer.deliver_async()
 
       {:ok, :enqueued}
     else