[orca] Remove redundant call to showGUI() in the navlist

[Joanmarie Diggs <joanied src gnome org>]

commit bb357393a2d42462a5e956b5e64e1cd5d8d9cb42
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Fri Nov 30 10:56:43 2018 -0500

    Remove redundant call to showGUI() in the navlist

 src/orca/orca_gui_navlist.py | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/src/orca/orca_gui_navlist.py b/src/orca/orca_gui_navlist.py
index c0d674b6f..c2c79c5d8 100644
--- a/src/orca/orca_gui_navlist.py
+++ b/src/orca/orca_gui_navlist.py
@@ -46,7 +46,6 @@ class OrcaNavListGUI:
         self._gui.set_accept_focus(True)
         self._script = orca_state.activeScript
         self._document = None
-        self.showGUI()
 
     def _createNavListDialog(self, columnHeaders, rows, selectedRow):
         dialog = Gtk.Dialog()