vlan: finish removing vlan_find_dev from public header

else case remained forgotten.
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/if_vlan.h

@@ -135,12 +135,6 @@ vlan_gro_frags(struct napi_struct *napi, struct vlan_group *grp,
 	       unsigned int vlan_tci);
 
 #else
-static inline struct net_device *vlan_find_dev(struct net_device *real_dev,
-					       u16 vlan_id)
-{
-	return NULL;
-}
-
 static inline struct net_device *vlan_dev_real_dev(const struct net_device *dev)
 {
 	BUG();