mark message as deprecated, add changelog.

CHANGELOG.md

@@ -57,6 +57,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (core/05-port) [\#6341](https://github.com/cosmos/ibc-go/pull/6341) Modify `UnmarshalPacketData` interface to take in the context, portID, and channelID. This allows for packet data's to be unmarshaled based on the channel version.
 * (apps/27-interchain-accounts) [\#6433](https://github.com/cosmos/ibc-go/pull/6433) Use UNORDERED as the default ordering for new ICA channels.
 * (apps/transfer) [\#6440](https://github.com/cosmos/ibc-go/pull/6440) Remove `GetPrefixedDenom`.
+* (apps/transfer) [\#6508](https://github.com/cosmos/ibc-go/pull/6508) Remove the DenomTrace type.
 
 ### State Machine Breaking
 

proto/ibc/applications/transfer/v1/denomtrace.proto

@@ -7,6 +7,7 @@ option go_package = "github.com/cosmos/ibc-go/v8/modules/apps/transfer/types";
 // DenomTrace contains the base denomination for ICS20 fungible tokens and the
 // source tracing information path.
 message DenomTrace {
+  option deprecated = true;
   // path defines the chain of port/channel identifiers used for tracing the
   // source of the fungible token.
   string path = 1;