fix: remove unused code

x/ibc/applications/transfer/keeper/keeper.go

@@ -2,6 +2,7 @@ package keeper
 
 import (
 	ibctransferkeeper "github.com/cosmos/ibc-go/v3/modules/apps/transfer/keeper"
+	transfertypes "github.com/cosmos/ibc-go/v3/modules/apps/transfer/types"
 	porttypes "github.com/cosmos/ibc-go/v3/modules/core/05-port/types"
 	"github.com/tendermint/tendermint/libs/log"
 
@@ -22,18 +23,18 @@ type Keeper struct {
 	paramSpace paramtypes.Subspace
 
 	ics4Wrapper   porttypes.ICS4Wrapper
-	channelKeeper types.ChannelKeeper
-	portKeeper    types.PortKeeper
-	authKeeper    types.AccountKeeper
-	bankKeeper    types.BankKeeper
+	channelKeeper transfertypes.ChannelKeeper
+	portKeeper    transfertypes.PortKeeper
+	authKeeper    transfertypes.AccountKeeper
+	bankKeeper    transfertypes.BankKeeper
 	scopedKeeper  capabilitykeeper.ScopedKeeper
 }
 
 // NewKeeper creates a new IBC transfer Keeper instance
 func NewKeeper(keeper ibctransferkeeper.Keeper,
 	cdc codec.BinaryCodec, key sdk.StoreKey, paramSpace paramtypes.Subspace,
-	ics4Wrapper porttypes.ICS4Wrapper, channelKeeper types.ChannelKeeper, portKeeper types.PortKeeper,
-	authKeeper types.AccountKeeper, bankKeeper types.BankKeeper, scopedKeeper capabilitykeeper.ScopedKeeper,
+	ics4Wrapper porttypes.ICS4Wrapper, channelKeeper transfertypes.ChannelKeeper, portKeeper transfertypes.PortKeeper,
+	authKeeper transfertypes.AccountKeeper, bankKeeper transfertypes.BankKeeper, scopedKeeper capabilitykeeper.ScopedKeeper,
 ) Keeper {
 	// ensure ibc transfer module account is set
 	if addr := authKeeper.GetModuleAddress(types.ModuleName); addr == nil {

x/ibc/applications/transfer/keeper/parse.go

@@ -38,7 +38,7 @@ func parseIBCCoinDenom(packet channeltypes.Packet, packetDenom string) string {
 		}
 		receiveDenom = denom
 	} else {
-		// sender chain is the source, mint vouchers
+		// sender chain is the source
 
 		// since SendPacket did not prefix the denomination, we must prefix denomination here
 		sourcePrefix := transfertypes.GetDenomPrefix(packet.GetDestPort(), packet.GetDestChannel())
@@ -48,8 +48,7 @@ func parseIBCCoinDenom(packet channeltypes.Packet, packetDenom string) string {
 		// construct the denomination trace from the full raw denomination
 		denomTrace := transfertypes.ParseDenomTrace(prefixedDenom)
 
-		voucherDenom := denomTrace.IBCDenom()
-		receiveDenom = voucherDenom
+		receiveDenom = denomTrace.IBCDenom()
 	}
 	return receiveDenom
 }

x/ibc/applications/transfer/types/events.go

@@ -3,10 +3,5 @@ package types
 // IBC transfer events
 const (
 	EventTypeReceive      = "ibc_receive"
-	EventTypeReceiveRoute = "ibc_receive_route"
 	AttributeKeyRecvError = "error"
-
-	AttributeKeyRouteSuccess = "success"
-	AttributeKeyRoute        = "route"
-	AttributeKeyRouteError   = "error"
 )