iwlwifi: remove unused parameter

framecnt_to_us is not used, remove it

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>

drivers/net/wireless/iwlwifi/iwl-dev.h

@@ -1361,7 +1361,6 @@ struct iwl_priv {
 	/* debugging info */
 	u32 debug_level; /* per device debugging will override global
 			    iwl_debug_level if set */
-	u32 framecnt_to_us;
 #endif /* CONFIG_IWLWIFI_DEBUG */
 #ifdef CONFIG_IWLWIFI_DEBUGFS
 	/* debugfs */