staging: gasket: apex: remove device enable and disable callbacks

These are not implemented for apex, and are now being removed from the
gasket framework.
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/gasket/apex_driver.c

@@ -688,9 +688,6 @@ static struct gasket_driver_desc apex_desc = {
 	.add_dev_cb = apex_add_dev_cb,
 	.remove_dev_cb = NULL,
 
-	.enable_dev_cb = NULL,
-	.disable_dev_cb = NULL,
-
 	.sysfs_setup_cb = apex_sysfs_setup_cb,
 	.sysfs_cleanup_cb = NULL,