Previous commit caused some later content to be confusing.

rs/nns/governance/unreleased_changelog.md

@@ -14,9 +14,7 @@ do NOT add an entry to this file, because this new function has no user-visible
 behavior change yet. Wait until an actual call is added before adding an entry
 to this file.
 
-TODO: Perhaps, the script that drafts the proposal summary can also move content
-from here to CHANGELOG.md (step 3.). OTOH, it might be better if this is done by
-a second (new) script, because the proposal ID is not known until later?
+TODO: Automate moving content from unreleased_changelog.md to CHANGELOG.md.
 
 
 # How to Write a Good Entry