sample-lnd.conf: remove duplicate setting and clean up section separators

[xanoni]

973e87b remove extra whitespace and harmonizes the separators between config sections

2c92958 deletes a duplicate "nolisten=true" line + comment

[yyforyongyu]

Thanks for the PR! The commit messages need to be modified a bit, similar to what you've done in this one.

[xanoni]

Thanks for the PR! The commit messages need to be modified a bit, similar to what you've done in this one.

Hi! Do you mean the "doc/sample-lnd.conf: " prefix before the message? I think someone did that for me, because in my local repo I don't see it. Sure, I can add that.

However, I see the sample-lnd.conf in the repo root folder, not in a doc subfolder. I see a doc**s** folder, though. Should my commit move the file to "docs", or keep it in the root?

[xanoni]

@yyforyongyu I created 2 versions of this PR. In this version here I don't move the file to docs. In #5451 I do move the file. Pick one of the 2 :)

[guggero]

LGTM, thanks!

I prefer this version over #5451. Makes it easier for people to find the example config.

[yyforyongyu]

LGTM👍
Like @guggero mentioned I think this version is better. Thanks for the PRs!