qcacmn: os_if: Remove legacy markings

Per current guidance remove legacy markings.

Change-Id: I0d9c1ff59217a115770baea9edd17c57a10a3bc2
CRs-Fixed: 2230684

os_if/linux/wifi_pos/inc/os_if_wifi_pos.h

@@ -1,9 +1,6 @@
 /*
  * Copyright (c) 2012-2017 The Linux Foundation. All rights reserved.
  *
- * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
- *
- *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
  * above copyright notice and this permission notice appear in all
@@ -19,12 +16,6 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/*
- * This file was originally distributed by Qualcomm Atheros, Inc.
- * under proprietary terms before Copyright ownership was assigned
- * to the Linux Foundation.
- */
-
 /**
  * DOC: os_if_wifi_pos.h
  * This file provide declaration of wifi_pos's os_if APIs