I think you just need to reload the page for the 'delete' option to become available to your retracted comment, but that it's only possible if it hasn't yet been responded to. So the very fact you asked about how to delete it under your original post, meant that you no longer could.
Someone with moderator/admin rights should be able to delete it entirely - if anyone with those rights passes by here then please do so. Sorry for the inconvenience.
This is the monthly thread for posting media of various types that you've found that you enjoy. Post what you're reading, listening to, watching, and your opinion of it. Post recommendations to blogs. Post whatever media you feel like discussing! To see previous recommendations, check out the older threads.
Rules:
NOTE: The rules this month have been edited slightly, for the purpose of greater clarity. Their intended meaning hasn't changed, just the wording. Please discuss any disagreement/objection under the "Meta" thread.