qcacld-3.0: Remove gLimHeartBeatCount from tAniSirLim

Field gLimHeartBeatCount in tAniSirLim is initialized but is otherwise
never used, so remove it.

Change-Id: I02c30aa599c1c43bab4cce6f8fff386696e74a96
CRs-Fixed: 2371101

core/mac/inc/ani_global.h

@@ -382,8 +382,6 @@ typedef struct sAniSirLim {
 	/* / Variable to keep track of number of currently associated STAs */
 	uint16_t gLimNumOfAniSTAs;      /* count of ANI peers */
 
-	/* Heart-Beat interval value */
-	uint32_t gLimHeartBeatCount;
 	tSirMacAddr gLimHeartBeatApMac[2];
 	uint8_t gLimHeartBeatApMacIndex;
 

core/mac/src/pe/lim/lim_api.c

@@ -99,9 +99,6 @@ static void __lim_init_stats_vars(struct mac_context *mac)
 	/* / Variable to keep track of number of currently associated STAs */
 	mac->lim.gLimNumOfAniSTAs = 0; /* count of ANI peers */
 
-	/* Heart-Beat interval value */
-	mac->lim.gLimHeartBeatCount = 0;
-
 	qdf_mem_zero(mac->lim.gLimHeartBeatApMac[0],
 			sizeof(tSirMacAddr));
 	qdf_mem_zero(mac->lim.gLimHeartBeatApMac[1],