qcacld-3.0: Remove RATE_LIMIT_ERROR_LOG macro

Change I64d7a0e3e180a636d710b42837ff3a982853fb12 ("qcacld-3.0: Remove
the excessive logging in hdd_get_adapter_by_vdev") removed the last
reference to macro RATE_LIMIT_ERROR_LOG. Since it is now unused,
remove it.

Change-Id: I531f0496edb064ed0a8208c497a7a5905be21713
CRs-Fixed: 2368719

core/hdd/src/wlan_hdd_main.c

@@ -222,7 +222,6 @@ static struct attribute *attrs[] = {
 
 #define HDD_OPS_INACTIVITY_TIMEOUT (120000)
 #define MAX_OPS_NAME_STRING_SIZE 20
-#define RATE_LIMIT_ERROR_LOG (256)
 
 static qdf_timer_t hdd_drv_ops_inactivity_timer;
 static struct task_struct *hdd_drv_ops_task;