services/presence/psutils: Re-order imports conventionally, without dbus.glib.

Importing dbus.glib has a side-effect (it sets up the default main loop
integration) so it's not something a module should do.

services/presence/psutils.py

@@ -14,9 +14,11 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
-import dbus, dbus.glib, gobject
 import logging
 
+import dbus
+import gobject
+
 
 _logger = logging.getLogger('s-p-s.psutils')