Yes, you can remove or cancel a post you have published.
You also have a 3-minute window to edit your own post before the 'Edit' button is removed for legal reasons.
After that time, posts can only be removed by reporting them as a violation. This is at the moderators' discretion as per the Terms of Use. Select 'Report' on the post and choose the reason as "Poster's Own Request" and provide the moderator with your reasoning.
Note that requests are not accepted by default, as removal may disrupt conversation threads. Therefore, please provide a valid reason for the removal.