staging: rtl8192e: Remove rtllib_network::last_associate

Variable was initialized and never used.
Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtllib.h

@@ -1246,7 +1246,6 @@ struct rtllib_network {
 	unsigned long last_scanned;
 	u8  mode;
 	u32 flags;
-	u32 last_associate;
 	u32 time_stamp[2];
 	u16 beacon_interval;
 	u16 listen_interval;

drivers/staging/rtl8192e/rtllib_rx.c

@@ -2326,7 +2326,6 @@ static inline int rtllib_network_init(
 	/* Where to pull this? beacon->listen_interval;*/
 	network->listen_interval = 0x0A;
 	network->rates_len = network->rates_ex_len = 0;
-	network->last_associate = 0;
 	network->ssid_len = 0;
 	network->hidden_ssid_len = 0;
 	memset(network->hidden_ssid, 0, sizeof(network->hidden_ssid));
@@ -2504,7 +2503,6 @@ static inline void update_network(struct rtllib_device *ieee,
 	dst->qos_data.active = qos_active;
 	dst->qos_data.old_param_count = old_param;
 
-	/* dst->last_associate is not overwritten */
 	dst->wmm_info = src->wmm_info;
 	if (src->wmm_param[0].ac_aci_acm_aifsn ||
 	   src->wmm_param[1].ac_aci_acm_aifsn ||