[gnome-software] Do not use the DesktopDB database plugin

[Richard Hughes <rhughes src gnome org>]

commit e06e80b348b4435c3984f228d741efb86c77db73
Author: Richard Hughes <richard hughsie com>
Date:   Thu Aug 28 14:48:30 2014 +0100

    Do not use the DesktopDB database plugin
    
    We can't actually rely on all applications being installed using PackageKit.

 src/plugins/gs-plugin-desktopdb.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/plugins/gs-plugin-desktopdb.c b/src/plugins/gs-plugin-desktopdb.c
index dfa5205..6cad5e2 100644
--- a/src/plugins/gs-plugin-desktopdb.c
+++ b/src/plugins/gs-plugin-desktopdb.c
@@ -58,6 +58,7 @@ gs_plugin_initialize (GsPlugin *plugin)
                                                     g_free,
                                                     g_free);
        g_mutex_init (&plugin->priv->plugin_mutex);
+       gs_plugin_set_enabled (plugin, FALSE);
 }
 
 /**