chore: remove stale comment

[jsoref]

Remove stale comment

References

This comment was originally written like this:

cli/lib/utils/update-notifier.js

Lines 118 to 123 in 103c8c3

	// only update the notification timeout if we actually finished checking
	module.exports = async npm => {
	const notification = await updateNotifier(npm)
	// intentional. do not await this. it's a best-effort update.
	updateTimeout(npm)
	npm.updateNotification = notification

The code that updates the timeout is no longer anywhere close to this comment:

cli/lib/cli/update-notifier.js

Lines 97 to 100 in 4c616e9

	// intentional. do not await this. it's a best-effort update. if this
	// fails, it's ok. might be using /dev/null as the cache or something weird
	// like that.
	writeFile(lastCheckedFile(npm), '').catch(() => {})