multi: remove Litecoin config options

This commit removes the `Litecoin`, `LtcMode` and `LitecoindMode`
members from the main LND `Config` struct. Since only the bitcoin
blockchain is now supported, this commit also deprecates the
`cfg.Bitcoin.Active` config option.

chainreg/chainparams.go

@@ -1,12 +1,9 @@
 package chainreg
 
 import (
-	"github.com/btcsuite/btcd/chaincfg"
 	bitcoinCfg "github.com/btcsuite/btcd/chaincfg"
-	"github.com/btcsuite/btcd/chaincfg/chainhash"
 	bitcoinWire "github.com/btcsuite/btcd/wire"
 	"github.com/lightningnetwork/lnd/keychain"
-	litecoinCfg "github.com/ltcsuite/ltcd/chaincfg"
 	litecoinWire "github.com/ltcsuite/ltcd/wire"
 )
 
@@ -18,14 +15,6 @@ type BitcoinNetParams struct {
 	CoinType uint32
 }
 
-// LitecoinNetParams couples the p2p parameters of a network with the
-// corresponding RPC port of a daemon running on the particular network.
-type LitecoinNetParams struct {
-	*litecoinCfg.Params
-	RPCPort  string
-	CoinType uint32
-}
-
 // BitcoinTestNetParams contains parameters specific to the 3rd version of the
 // test network.
 var BitcoinTestNetParams = BitcoinNetParams{
@@ -57,38 +46,6 @@ var BitcoinSigNetParams = BitcoinNetParams{
 	CoinType: keychain.CoinTypeTestnet,
 }
 
-// LitecoinSimNetParams contains parameters specific to the simulation test
-// network.
-var LitecoinSimNetParams = LitecoinNetParams{
-	Params:   &litecoinCfg.TestNet4Params,
-	RPCPort:  "18556",
-	CoinType: keychain.CoinTypeTestnet,
-}
-
-// LitecoinTestNetParams contains parameters specific to the 4th version of the
-// test network.
-var LitecoinTestNetParams = LitecoinNetParams{
-	Params:   &litecoinCfg.TestNet4Params,
-	RPCPort:  "19334",
-	CoinType: keychain.CoinTypeTestnet,
-}
-
-// LitecoinMainNetParams contains the parameters specific to the current
-// Litecoin mainnet.
-var LitecoinMainNetParams = LitecoinNetParams{
-	Params:   &litecoinCfg.MainNetParams,
-	RPCPort:  "9334",
-	CoinType: keychain.CoinTypeLitecoin,
-}
-
-// LitecoinRegTestNetParams contains parameters specific to a local litecoin
-// regtest network.
-var LitecoinRegTestNetParams = LitecoinNetParams{
-	Params:   &litecoinCfg.RegressionNetParams,
-	RPCPort:  "18334",
-	CoinType: keychain.CoinTypeTestnet,
-}
-
 // BitcoinRegTestNetParams contains parameters specific to a local bitcoin
 // regtest network.
 var BitcoinRegTestNetParams = BitcoinNetParams{
@@ -97,49 +54,6 @@ var BitcoinRegTestNetParams = BitcoinNetParams{
 	CoinType: keychain.CoinTypeTestnet,
 }
 
-// ApplyLitecoinParams applies the relevant chain configuration parameters that
-// differ for litecoin to the chain parameters typed for btcsuite derivation.
-// This function is used in place of using something like interface{} to
-// abstract over _which_ chain (or fork) the parameters are for.
-func ApplyLitecoinParams(params *BitcoinNetParams,
-	litecoinParams *LitecoinNetParams) {
-
-	params.Name = litecoinParams.Name
-	params.Net = bitcoinWire.BitcoinNet(litecoinParams.Net)
-	params.DefaultPort = litecoinParams.DefaultPort
-	params.CoinbaseMaturity = litecoinParams.CoinbaseMaturity
-
-	copy(params.GenesisHash[:], litecoinParams.GenesisHash[:])
-
-	// Address encoding magics
-	params.PubKeyHashAddrID = litecoinParams.PubKeyHashAddrID
-	params.ScriptHashAddrID = litecoinParams.ScriptHashAddrID
-	params.PrivateKeyID = litecoinParams.PrivateKeyID
-	params.WitnessPubKeyHashAddrID = litecoinParams.WitnessPubKeyHashAddrID
-	params.WitnessScriptHashAddrID = litecoinParams.WitnessScriptHashAddrID
-	params.Bech32HRPSegwit = litecoinParams.Bech32HRPSegwit
-
-	copy(params.HDPrivateKeyID[:], litecoinParams.HDPrivateKeyID[:])
-	copy(params.HDPublicKeyID[:], litecoinParams.HDPublicKeyID[:])
-
-	params.HDCoinType = litecoinParams.HDCoinType
-
-	checkPoints := make([]chaincfg.Checkpoint, len(litecoinParams.Checkpoints))
-	for i := 0; i < len(litecoinParams.Checkpoints); i++ {
-		var chainHash chainhash.Hash
-		copy(chainHash[:], litecoinParams.Checkpoints[i].Hash[:])
-
-		checkPoints[i] = chaincfg.Checkpoint{
-			Height: litecoinParams.Checkpoints[i].Height,
-			Hash:   &chainHash,
-		}
-	}
-	params.Checkpoints = checkPoints
-
-	params.RPCPort = litecoinParams.RPCPort
-	params.CoinType = litecoinParams.CoinType
-}
-
 // IsTestnet tests if the givern params correspond to a testnet
 // parameter configuration.
 func IsTestnet(params *BitcoinNetParams) bool {