qcacld-3.0: Remove WLAN_WAPI_KEY_RSC_LEN macro

The macro WLAN_WAPI_KEY_RSC_LEN has never been used by the current
generation of the driver, so remove it.

Change-Id: I696052e84025477f483a37b844c70d135832f97b
CRs-Fixed: 2370027

core/mac/inc/ani_system_defs.h

@@ -40,7 +40,6 @@
 
 /* Max key size  including the WAPI and TKIP */
 #define WLAN_MAX_KEY_RSC_LEN         16
-#define WLAN_WAPI_KEY_RSC_LEN        16
 
 #ifndef false
 #undef false