[gnome-initial-setup] driver: remove obsolete function prototype

[Will Thompson <wjt src gnome org>]

commit 0464e50c1641ffa8d347e4bb86c1a6c9f71d1861
Author: Will Thompson <wjt endlessm com>
Date:   Sun Jul 5 13:40:15 2020 +0100

    driver: remove obsolete function prototype
    
    This was added in error in 02842557680fea2199756e4603f9dc374748ac7a.

 gnome-initial-setup/gis-driver.h | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/gnome-initial-setup/gis-driver.h b/gnome-initial-setup/gis-driver.h
index 59ea1a2c..a8f1922b 100644
--- a/gnome-initial-setup/gis-driver.h
+++ b/gnome-initial-setup/gis-driver.h
@@ -119,8 +119,6 @@ GisDriverMode gis_driver_get_mode (GisDriver *driver);
 
 gboolean gis_driver_is_small_screen (GisDriver *driver);
 
-GKeyFile *gis_driver_get_vendor_conf_file (GisDriver *driver);
-
 void gis_driver_add_page (GisDriver *driver,
                           GisPage   *page);