qcacld-3.0: Remove WE_GET_STA_INFO_SIZE macro

Change I3a506905f40272efe472028391e8080d764cb390 ("qcacld-3.0: Use max
STA count when iterating SAP clients") removed the only reference to
macro WE_GET_STA_INFO_SIZE. Since it is unused, remove it.

Change-Id: I6c8069f0ce420fbe08d4e2527ce94f5c906027c6
CRs-Fixed: 2368718

core/hdd/src/wlan_hdd_hostapd_wext.c

@@ -47,7 +47,7 @@
 #define    IS_UP_AUTO(_ic) \
 	(IS_UP((_ic)->ic_dev) && (_ic)->ic_roaming == IEEE80211_ROAMING_AUTO)
 #define WE_WLAN_VERSION     1
-#define WE_GET_STA_INFO_SIZE 30
+
 /* WEXT limitation: MAX allowed buf len for any *
  * IW_PRIV_TYPE_CHAR is 2Kbytes *
  */