By going to the question you asked in the Question plugin left side of the dashboard or at the top of the instance in the header, you have the Questions tab. Then, you can choose the question you asked and then you have the options to delete the question in the bottom.
You can use this question as an example. :)
Hello friends! From the community that brought you Welcome Wednesday, Throwback Thursday and Friday Fun, welcome to Taco Tuesday, a weekly discussion about all things Trello. The best part? One Tac...
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