doc: add release notes for removal of the -deprecatedrpc=addresses flag

doc/release-notes.md

@@ -64,6 +64,12 @@ P2P and network changes
 Updated RPCs
 ------------
 
+- The `-deprecatedrpc=addresses` configuration option has been removed.  RPCs
+  `gettxout`, `getrawtransaction`, `decoderawtransaction`, `decodescript`,
+  `gettransaction verbose=true` and REST endpoints `/rest/tx`, `/rest/getutxos`,
+  `/rest/block` no longer return the `addresses` and `reqSigs` fields, which
+  were previously deprecated in 22.0. (#22650)
+
 New RPCs
 --------