Q:

What to do with your answer when no one, including OP, is interested in the post

Example: Link Removed, sorry
Sometimes I go ahead post an answer to a question and then wait endlessly for OP to show any interest in the post itself, let alone my answer.
If there are other answers one can say that OP might be looking at those answers and that is absolutely fine but i am talking about situations where that answer is the only answer. No comments/votes whatsoever by the OP or anyone for that matter.
I feel like I  wasted time on such answers and sometimes I feel like deleting those answers because no one is interested in that question/answer post.
But i don't want to just go ahead delete stuff after a couple of days with no reactions because this site does not focus on short term problem solving for the OP and someone can come in future and learn something from that post.
So is it fine if i go ahead delete such answers (mine)? Shouldn't the OP usually be willing to waste a few seconds of their time to take part in activity related to their question when others have wasted some of their time to answer what they asked?
Please don't go ahead start voting on the answer thinking i brought it up because I want some votes, that's not what i mean. 
Edit
I just removed the link because I don't feel all those up-votes that the answer is getting are well deserved. That post is getting all the attention just because of this question and I sort of feel bad about getting up-votes this way.

A:

Don't delete it - it could (and probably will) be useful to someone else. Many new users don't have the culture and habit to up-vote or accept answers once their problem is solved. It might take more time before someone else googles that and your answers starts showing up in results. I also have such answers but after some time it seems they've been helpful to someone else as they start gaining up-votes.
PS: Great answer to the timezone question BTW :)

A:

No, you should never delete an answer solely for the reason of it not getting accepted or up-voted. The fact that nobody has taken the time to give feedback on your answer does not mean it's not (been) useful to anyone.
Your answer might help future readers with the same problem. If you would have deleted your answer, they would have to ask the same question again. So, by deleting your answer you're basically slamming the door in the face of people having the same issue. Just leave it there.
The only legitimate reason (IMHO) to delete an answer if is you made a mistake in it (like you misinterpreted the question the first time your read it and are giving the wrong solution) or by overlooking certain things that might be potentially harmful or have no added value to the question asked. For example, if your answer uses a deprecated function that is strongly discouraged from using anymore, you could delete that answer (although it would be better yet to improve it to use the proper code).
SO is a Q&A community whose archive is more valuable then any separate question/answer. By keeping answers out there, you contribute to the quality of that archive.

A:

I don't think you should delete it - we've all been there, and it's all too easy to have that initial reaction but the point to remember is that this is a community and that answer could be silently helping others in a big way.
If the OP has a low rep, or is a new member - it might be worth putting a comment with a reminder "Don't forget to accept the answer that helped you" etc...
This type of comment isn't a plea for votes or rep, this is simply a gentle nudge to encourage that person to become an active part of the community.

