Not sure what your context is here, but I delete comments from time to time. It works fine as long as you get to it reasonably quickly and nobody has replied yet.

From the FAQ:

"What does [deleted] mean?

The author deleted the post outright, or asked us to. Unlike dead posts, these remain deleted even when showdead is turned on.

https://news.ycombinator.com/newsfaq.html

[edit: formatting]