bpo-38870: Remove dead code related with argument unparsing

[isidentical]

It looks like there are no ways this code to fall down first = False block. Because of this statement;

cpython/Lib/ast.py

Lines 1187 to 1189 in 94d2c8d

	if node.vararg or node.kwonlyargs:
	if first:
	first = False

https://bugs.python.org/issue38870

[pablogsal]

Please, remove the NEWS entry. There is no user-facing change here :)

[bedevere-bot]

A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated.

Once you have made the requested changes, please leave a comment on this pull request containing the phrase I have made the requested changes; please review again. I will then notify any core developers who have left a review that you're ready for them to take another look at this pull request.

[isidentical]

I have made the requested changes; please review again

[bedevere-bot]

Thanks for making the requested changes!

@pablogsal: please review the changes made to this pull request.

[bedevere-bot]

Thanks for making the requested changes!

@pablogsal: please review the changes made to this pull request.

[pablogsal]

Disregard my latest message, I was looking at the wrong branch! (Reviewing on the phone is a suboptimal experience) 😂

[pablogsal]

Thanks for the PR! 🎉