freebsd11_wlan: Remove the BOSII_* ioctls.

They are not used anywhere (the rest of the stack uses the FreeBSD
ioctls instead), and there has been a TODO to remove them for
quite some time.

headers/private/net/bosii_driver.h

@@ -1,24 +0,0 @@
-/*
- * Copyright 2009-2010, Haiku, Inc. All Rights Reserved.
- * Distributed under the terms of the MIT License.
- */
-#ifndef _BOSII_DRIVER_H_
-#define _BOSII_DRIVER_H_
-
-
-#include <ether_driver.h>
-
-
-#define ETHER_OP_CODES_END (ETHER_GET_LINK_STATE + 1)
-
-// TODO: those will be removed again
-/* ioctl() opcodes a wlan driver should support */
-enum {
-	BOSII_DEVICE = ETHER_OP_CODES_END,
-	BOSII_DETECT_NETWORKS,
-	BOSII_GET_DETECTED_NETWORKS,
-	BOSII_JOIN_NETWORK,
-	BOSII_GET_ASSOCIATED_NETWORK
-};
-
-#endif /* _BOSII_DRIVER_H_ */