docs: move entry for 7705 to 0.16.3

docs/release-notes/release-notes-0.17.0.md

@@ -58,10 +58,6 @@ unlock or create.
 * [Restore support](https://github.com/lightningnetwork/lnd/pull/7678) for
   `PKCS8`-encoded cert private keys.
 
-* [Re-encrypt/regenerate](https://github.com/lightningnetwork/lnd/pull/7705) 
-  all macaroon DB root keys on `ChangePassword`/`GenerateNewRootKey` 
-  respectively.
-
 ## Code Health
 
 * Updated [our fork for serializing protobuf as JSON to be based on the