Fix leftover from an imperfect merge of 165a4b2a

lib/pleroma/user/query.ex

@@ -48,7 +48,6 @@ defmodule Pleroma.User.Query do
             is_moderator: boolean(),
             super_users: boolean(),
             mfc_user: boolean(),
-            exclude_service_users: boolean(),
             invisible: boolean(),
             internal: boolean(),
             followers: User.t(),