[gdm] Remove unused variables

[Robert Ancell <rancell src gnome org>]

commit e7fdf1899cfeb5fbd512f2ea48ad18623f6a7732
Author: Robert Ancell <robert ancell canonical com>
Date:   Wed Jan 10 12:24:11 2018 +1300

    Remove unused variables

 daemon/gdm-manager.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/daemon/gdm-manager.c b/daemon/gdm-manager.c
index 9f06196..69bae91 100644
--- a/daemon/gdm-manager.c
+++ b/daemon/gdm-manager.c
@@ -82,12 +82,10 @@ struct GdmManagerPrivate
         GHashTable             *transient_sessions;
         GHashTable             *open_reauthentication_requests;
         gboolean                xdmcp_enabled;
-        GCancellable           *cancellable;
 
         gboolean                started;
         gboolean                show_local_greeter;
 
-        GDBusProxy               *bus_proxy;
         GDBusConnection          *connection;
         GDBusObjectManagerServer *object_manager;