dsa: rtl8366: Remove unused variable.

drivers/net/dsa/rtl8366.c: In function ‘rtl8366_reset_vlan’:
drivers/net/dsa/rtl8366.c:234:25: warning: unused variable ‘vlan4k’ [-Wunused-variable]
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/dsa/rtl8366.c

@@ -231,7 +231,6 @@ EXPORT_SYMBOL_GPL(rtl8366_enable_vlan);
 int rtl8366_reset_vlan(struct realtek_smi *smi)
 {
 	struct rtl8366_vlan_mc vlanmc;
-	struct rtl8366_vlan_4k vlan4k;
 	int ret;
 	int i;