qcacld-3.0: Remove typedef tAniTxRxStats

Previous change I57c06c4506bfbd57dd283c03c4bd78c34727672b
("qcacld-3.0: Remove typedef tAniStaStatStruct") removed the only
references to typedef tAniTxRxStats, so remove it as well.

Change-Id: I812d5db78d8058937d0de86ab98e5933374cf495
CRs-Fixed: 2363220

core/mac/inc/sir_api.h

@@ -1359,14 +1359,6 @@ typedef struct sAniSecurityStat {
 
 } tAniSecurityStat, *tpAniSecurityStat;
 
-typedef struct sAniTxRxStats {
-	tAni64BitCounters txFrames;
-	tAni64BitCounters rxFrames;
-	tAni64BitCounters nRcvBytes;
-	tAni64BitCounters nXmitBytes;
-
-} tAniTxRxStats, *tpAniTxRxStats;
-
 typedef struct sAniSecStats {
 	tAniSecurityStat aes;
 	tAni64BitCounters aesReplays;