lnwallet+peer: remove unnecessary MaxPendingAmount method

We don't need this method, as we can directly access it from the peer
via public fields with its current usage.

lnwallet/channel.go

@@ -6336,9 +6336,3 @@ func (lc *LightningChannel) RemoteCommitHeight() uint64 {
 func (lc *LightningChannel) FwdMinHtlc() lnwire.MilliSatoshi {
 	return lc.localChanCfg.MinHTLC
 }
-
-// MaxPendingAmount returns the maximum HTLC value that can be pending at
-// any time over this channel.
-func (lc *LightningChannel) MaxPendingAmount() lnwire.MilliSatoshi {
-	return lc.localChanCfg.MaxPendingAmount
-}

peer.go

@@ -1710,7 +1710,7 @@ out:
 			defaultPolicy := p.server.cc.routingPolicy
 			forwardingPolicy := &htlcswitch.ForwardingPolicy{
 				MinHTLC:       fwdMinHtlc,
-				MaxHTLC:       lnChan.MaxPendingAmount(),
+				MaxHTLC:       newChan.LocalChanCfg.MaxPendingAmount,
 				BaseFee:       defaultPolicy.BaseFee,
 				FeeRate:       defaultPolicy.FeeRate,
 				TimeLockDelta: defaultPolicy.TimeLockDelta,