Staging: ks7010: remove unused function in ks_wlan_net.c

We get 1 warning when building kernel with W=1:
drivers/staging/ks7010/ks_wlan_net.c:3520:5: warning: no previous prototype for 'ks_wlan_reset' [-Wmissing-prototypes]

In fact, these functions are unused in
ks_wlan_net.c, but should be removed.

So this patch removes the unused function.
Signed-off-by: NBaoyou Xie <baoyou.xie@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ks7010/ks_wlan_net.c

@@ -3516,8 +3516,3 @@ int ks_wlan_net_stop(struct net_device *dev)
 
 	return ret;
 }
-
-int ks_wlan_reset(struct net_device *dev)
-{
-	return 0;
-}