Move noiseDial from config.go to server.go

noiseDial is only called from server.go, has nothing to do with configuration,
and moving it removes config.go's reliance on btcec and brontide.

config.go

@@ -19,10 +19,8 @@ import (
 	"strings"
 	"time"
 
-	"github.com/btcsuite/btcd/btcec"
 	"github.com/btcsuite/btcutil"
 	flags "github.com/jessevdk/go-flags"
-	"github.com/lightningnetwork/lnd/brontide"
 	"github.com/lightningnetwork/lnd/htlcswitch/hodl"
 	"github.com/lightningnetwork/lnd/lncfg"
 	"github.com/lightningnetwork/lnd/lnwire"
@@ -1029,15 +1027,6 @@ func supportedSubsystems() []string {
 	return subsystems
 }
 
-// noiseDial is a factory function which creates a connmgr compliant dialing
-// function by returning a closure which includes the server's identity key.
-func noiseDial(idPriv *btcec.PrivateKey) func(net.Addr) (net.Conn, error) {
-	return func(a net.Addr) (net.Conn, error) {
-		lnAddr := a.(*lnwire.NetAddress)
-		return brontide.Dial(idPriv, lnAddr, cfg.net.Dial)
-	}
-}
-
 func parseRPCParams(cConfig *chainConfig, nodeConfig interface{}, net chainCode,
 	funcName string) error {
 

server.go

@@ -206,6 +206,15 @@ func parseAddr(address string) (net.Addr, error) {
 	return cfg.net.ResolveTCPAddr("tcp", hostPort)
 }
 
+// noiseDial is a factory function which creates a connmgr compliant dialing
+// function by returning a closure which includes the server's identity key.
+func noiseDial(idPriv *btcec.PrivateKey) func(net.Addr) (net.Conn, error) {
+	return func(a net.Addr) (net.Conn, error) {
+		lnAddr := a.(*lnwire.NetAddress)
+		return brontide.Dial(idPriv, lnAddr, cfg.net.Dial)
+	}
+}
+
 // newServer creates a new instance of the server which is to listen using the
 // passed listener address.
 func newServer(listenAddrs []net.Addr, chanDB *channeldb.DB, cc *chainControl,