DBus: remove from list of "control" interfaces

The D-Bus interface is always started automatically. It should NOT be
added to --control.
(cherry picked from commit 4ba6b7dab9fb66fce9967ed979f1b692be18a1f2)

modules/control/dbus/dbus.c

@@ -137,7 +137,6 @@ static void DispatchDBusMessages( intf_thread_t *p_intf );
 vlc_module_begin ()
     set_shortname( N_("DBus"))
     set_category( CAT_INTERFACE )
-    set_subcategory( SUBCAT_INTERFACE_CONTROL )
     set_description( N_("D-Bus control interface") )
     set_capability( "interface", 0 )
     set_callbacks( Open, Close )