The mtu check in bridge_enqueue is bogus as the maximum Ethernet frame is

actually 1514, so comparing the mbuf length which includes the Ethernet header
to the interface MTU is wrong.

The check was a little over the top so just remove it.

Approved by:	mlaier (mentor)
MFC after:	3 days

sys/net/if_bridge.c

@@ -1268,13 +1268,6 @@ bridge_enqueue(struct bridge_softc *sc, struct ifnet *dst_ifp, struct mbuf *m)
 	len = m->m_pkthdr.len;
 	mflags = m->m_flags;
 
-#ifdef INVARIANTS
-	if (len > dst_ifp->if_mtu)
-		if_printf(sc->sc_ifp,
-		    "MTU mismatch, frame length %d exceeds %ld on %s\n", len,
-		    dst_ifp->if_mtu, dst_ifp->if_xname);
-#endif
-
 	IFQ_ENQUEUE(&dst_ifp->if_snd, m, err);
 	if (err == 0) {