net-next: dsa: qca8k: remove empty set_addr() stub

The set_addr() callback is now optional. Remove the empty stub that qca8k
has.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/qca8k.c

@@ -585,13 +585,6 @@ qca8k_setup(struct dsa_switch *ds)
 	return 0;
 }
 
-static int
-qca8k_set_addr(struct dsa_switch *ds, u8 *addr)
-{
-	/* The subsystem always calls this function so add an empty stub */
-	return 0;
-}
-
 static int
 qca8k_phy_read(struct dsa_switch *ds, int phy, int regnum)
 {
@@ -921,7 +914,6 @@ qca8k_get_tag_protocol(struct dsa_switch *ds)
 static struct dsa_switch_ops qca8k_switch_ops = {
 	.get_tag_protocol	= qca8k_get_tag_protocol,
 	.setup			= qca8k_setup,
-	.set_addr		= qca8k_set_addr,
 	.get_strings		= qca8k_get_strings,
 	.phy_read		= qca8k_phy_read,
 	.phy_write		= qca8k_phy_write,