net: vlan: minor: remove unused HAVE_VLAN_PUT_TAG

Remove the definition of HAVE_VLAN_PUT_TAG since it's not
used or exported anywhere.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/if_vlan.h

@@ -243,8 +243,6 @@ static inline struct sk_buff *__vlan_hwaccel_put_tag(struct sk_buff *skb,
 	return skb;
 }
 
-#define HAVE_VLAN_PUT_TAG
-
 /**
  * vlan_put_tag - inserts VLAN tag according to device features
  * @skb: skbuff to tag