dbus: remove unused code

refcount is never incremented nor used, thus the connection was never properly closed

...shutdown bug still there

efl/dbus_mainloop/e_dbus.c

@@ -439,7 +439,6 @@ e_dbus_connection_close(E_DBus_Connection *conn)
       close_connection++;
       return;
    }
-   if (--(conn->refcount) != 0) return;
 
    dbus_connection_free_data_slot(&connection_slot);
    dbus_connection_set_watch_functions(conn->conn,

efl/dbus_mainloop/e_dbus.h

@@ -35,7 +35,6 @@ struct E_DBus_Connection
   Eina_List *fd_handlers;
   Eina_List *timeouts;
   Ecore_Idler *idler;
-  int refcount;
 };
 
 struct E_DBus_Handler_Data