Remove the commented-out functions that are not needed.
Risk
Common conceptions: What happens if there's "valuable code" in there?
Response: (a) version control will make sure it's still there, if we ever need it + (b) there's plenty more code where it came from, i.e. similar to writing, we will write it better the second time we write it :)
Commented-out functions remain in the code.
Suggested solution
Remove the commented-out functions that are not needed.
Risk
Common conceptions: What happens if there's "valuable code" in there? Response: (a) version control will make sure it's still there, if we ever need it + (b) there's plenty more code where it came from, i.e. similar to writing, we will write it better the second time we write it :)