chore(comments): Drop dead code from comments app

[susnux]

Summary

Drop code that is not used anymore from repository - also drop "comments" script / entry point which is unused.

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[artonge]

What was the use of this script?

[susnux]

Drone (samba) unrelated

[susnux]

What was the use of this script?

Old API that was dropped long time ago it seems. The only API used by other apps is the OCA.Comments.View used by e.g. announcement center

[artonge]

I remember @nickvergessen was also afraid to lose an API for Talk

[nickvergessen]

Old API that was dropped long time ago it seems

It was not dropped. I prevent removal just last month....

This is public API:

server/lib/private/Comments/Manager.php

Lines 1615 to 1623 in aa5f037

	/**
	* Load the Comments app into the page
	*
	* @since 21.0.0
	*/
	public function load(): void {
	$this->initialStateService->provideInitialState('comments', 'max-message-length', IComment::MAX_MESSAGE_LENGTH);
	Util::addScript('comments', 'comments-app');
	}

Can we just keep it for now?

We can deprecate and drop in 3 years if there are reasons apart from "just because"

[nickvergessen]

See #41491 (review) and further

[nickvergessen]

Reverting in #42207 to restore the nice functionality and public API

[susnux]

@nickvergessen that is a different script that is still provided. comments-app is still provided.

Meaning the public API is still there just some dead files are removed.