[geary/geary-0.12] Don't use overwrite_confirmation with FileChooserNative, it's not supported.

[Michael Gratton <mjog src gnome org>]

commit 75dfa7a11ff0cb039b1150363c428ae2951a37f7
Author: Michael James Gratton <mike vee net>
Date:   Wed Nov 15 11:46:36 2017 +1100

    Don't use overwrite_confirmation with FileChooserNative, it's not supported.

 src/client/application/geary-controller.vala |    6 ------
 1 files changed, 0 insertions(+), 6 deletions(-)
---
diff --git a/src/client/application/geary-controller.vala b/src/client/application/geary-controller.vala
index 48ed734..55a5978 100644
--- a/src/client/application/geary-controller.vala
+++ b/src/client/application/geary-controller.vala
@@ -2095,12 +2095,6 @@ public class GearyController : Geary.BaseObject {
 #endif
         if (!Geary.String.is_empty(filename))
             dialog.set_current_name(filename);
-        dialog.set_do_overwrite_confirmation(true);
-        dialog.confirm_overwrite.connect((chooser) => {
-            return do_overwrite_confirmation(chooser.get_file())
-                ? Gtk.FileChooserConfirmation.ACCEPT_FILENAME
-                : Gtk.FileChooserConfirmation.SELECT_AGAIN;
-            });
         bool accepted = (dialog.run() == Gtk.ResponseType.ACCEPT);
         string? accepted_filename = dialog.get_filename();