qcacld-3.0: Remove macro HDD_REASON_MICHAEL_MIC_FAILURE

Change I9c68bf1b2c734ae2bcb862cd8acfbcea41f48411 ("qcacld-3.0: Remove
obsolete STA support for SIOCSIWMLME") removed the only usage of macro
HDD_REASON_MICHAEL_MIC_FAILURE. Since it is now unused, remove it.

Change-Id: I09a11b53982cc5625c82d09777cac379031b644d
CRs-Fixed: 2376936

core/hdd/inc/wlan_hdd_wext.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -143,14 +143,6 @@ typedef enum {
 /** Disable 11d */
 #define DISABLE_11D 0
 
-/*
- * refer wpa.h in wpa supplicant code for REASON_MICHAEL_MIC_FAILURE
- *
- * supplicant sets REASON_MICHAEL_MIC_FAILURE as the reason code when it
- * sends the MLME deauth IOCTL for TKIP counter measures
- */
-#define HDD_REASON_MICHAEL_MIC_FAILURE 14
-
 #define HDD_RTSCTS_EN_MASK                  0xF
 #define HDD_RTSCTS_ENABLE                   1
 #define HDD_CTS_ENABLE                      2