[vte] spawn: Remove unused member variables

[Christian Persch <chpe src gnome org>]

commit aada5503c7d11c4620a27a68f689824fc28f5d58
Author: Christian Persch <chpe src gnome org>
Date:   Tue Apr 28 20:52:35 2020 +0200

    spawn: Remove unused member variables

 src/spawn.hh | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/src/spawn.hh b/src/spawn.hh
index d2ce5385..26e6e55c 100644
--- a/src/spawn.hh
+++ b/src/spawn.hh
@@ -198,8 +198,6 @@ private:
         SpawnContext m_context{};
         int m_timeout{default_timeout};
         vte::glib::RefPtr<GCancellable> m_cancellable{};
-        GAsyncReadyCallback m_callback{nullptr};
-        void* m_callback_user_data{nullptr};
 
         GPollFD m_cancellable_pollfd{-1, 0, 0};
         vte::libc::FD m_child_report_error_pipe_read{};