switchdev: remove "NONE" transaction phase

Shouldn't have been there in the first place. Now it is unused, kill it.
Signed-off-by: NJiri Pirko <jiri@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/net/switchdev.h

@@ -18,7 +18,6 @@
 #define SWITCHDEV_F_NO_RECURSE		BIT(0)
 
 enum switchdev_trans_ph {
-	SWITCHDEV_TRANS_NONE,
 	SWITCHDEV_TRANS_PREPARE,
 	SWITCHDEV_TRANS_ABORT,
 	SWITCHDEV_TRANS_COMMIT,