rpcserver+routerrpc: remove payment limit

lnrpc/routerrpc/router_backend.go

@@ -27,9 +27,6 @@ import (
 // RouterBackend contains the backend implementation of the router rpc sub
 // server calls.
 type RouterBackend struct {
-	// MaxPaymentMSat is the largest payment permitted by the backend.
-	MaxPaymentMSat lnwire.MilliSatoshi
-
 	// SelfNode is the vertex of the node sending the payment.
 	SelfNode route.Vertex
 
@@ -143,10 +140,6 @@ func (r *RouterBackend) QueryRoutes(ctx context.Context,
 	if err != nil {
 		return nil, err
 	}
-	if amt > r.MaxPaymentMSat {
-		return nil, fmt.Errorf("payment of %v is too large, max payment "+
-			"allowed is %v", amt, r.MaxPaymentMSat.ToSatoshis())
-	}
 
 	// Unmarshall restrictions from request.
 	feeLimit := lnrpc.CalculateFeeLimit(in.FeeLimit, amt)
@@ -489,13 +482,6 @@ func (r *RouterBackend) UnmarshallRoute(rpcroute *lnrpc.Route) (
 			return nil, err
 		}
 
-		if routeHop.AmtToForward > r.MaxPaymentMSat {
-			return nil, fmt.Errorf("payment of %v is too large, "+
-				"max payment allowed is %v",
-				routeHop.AmtToForward,
-				r.MaxPaymentMSat.ToSatoshis())
-		}
-
 		hops[i] = routeHop
 
 		prevNodePubKey = routeHop.PubKeyBytes

lnrpc/routerrpc/router_backend_test.go

@@ -186,9 +186,8 @@ func testQueryRoutes(t *testing.T, useMissionControl bool, useMsat bool) {
 	}
 
 	backend := &RouterBackend{
-		MaxPaymentMSat: lnwire.NewMSatFromSatoshis(1000000),
-		FindRoute:      findRoute,
-		SelfNode:       route.Vertex{1, 2, 3},
+		FindRoute: findRoute,
+		SelfNode:  route.Vertex{1, 2, 3},
 		FetchChannelCapacity: func(chanID uint64) (
 			btcutil.Amount, error) {