net: 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 and __user.

@@
type T;
T *p;
@@

-	(T *)p
+	p

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/atm/lec.c b/net/atm/lec.c
index 3da125c..2e3d942 100644
--- a/net/atm/lec.c
+++ b/net/atm/lec.c
@@ -1604,7 +1604,7 @@
 {
 	unsigned long flags;
 	struct lec_arp_table *to_remove = (struct lec_arp_table *)data;
-	struct lec_priv *priv = (struct lec_priv *)to_remove->priv;
+	struct lec_priv *priv = to_remove->priv;
 
 	del_timer(&to_remove->timer);