wireless: Remove casts to same type

Adding casts of objects to the same type is unnecessary
and confusing for a human reader.

For example, this cast:

        int y;
        int *p = (int *)&y;

I used the coccinelle script below to find and remove these
unnecessary casts.  I manually removed the conversions this
script produces of casts with __force, __iomem and __user.

@@
type T;
T *p;
@@

-       (T *)p
+       p

Neatened the mwifiex_deauthenticate_infra function which
was doing odd things with array pointers and not using
is_zero_ether_addr.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/libertas/if_usb.c b/drivers/net/wireless/libertas/if_usb.c
index cd3b0d4..64b7dc5 100644
--- a/drivers/net/wireless/libertas/if_usb.c
+++ b/drivers/net/wireless/libertas/if_usb.c
@@ -302,7 +302,7 @@
 static void if_usb_disconnect(struct usb_interface *intf)
 {
 	struct if_usb_card *cardp = usb_get_intfdata(intf);
-	struct lbs_private *priv = (struct lbs_private *) cardp->priv;
+	struct lbs_private *priv = cardp->priv;
 
 	lbs_deb_enter(LBS_DEB_MAIN);