[gnome-builder] app: remove unused function

[Christian Hergert <chergert src gnome org>]

commit fc9b16a490dc7ba2e222e5e20aec3c09b4b6f8b9
Author: Christian Hergert <chergert redhat com>
Date:   Mon Aug 6 12:50:13 2018 -0700

    app: remove unused function

 src/libide/application/ide-application.c | 9 ---------
 1 file changed, 9 deletions(-)
---
diff --git a/src/libide/application/ide-application.c b/src/libide/application/ide-application.c
index c5930dbf9..e3d309d36 100644
--- a/src/libide/application/ide-application.c
+++ b/src/libide/application/ide-application.c
@@ -385,15 +385,6 @@ ide_application_register_settings (IdeApplication *self)
   IDE_EXIT;
 }
 
-static GFile *
-build_legacy_cache_directory (const gchar *name)
-{
-  return g_file_new_build_filename (g_get_user_cache_dir (),
-                                    ide_get_program_name (),
-                                    name,
-                                    NULL);
-}
-
 static void
 projects_directory_changed_cb (IdeApplication *self,
                                const gchar    *key,