If you are having a blog hosted on WordPress.com and now moved that to your self hosted blogging platform and wants to delete the previous one then achieve that successfully by following below mentioned steps.
>> Login to your WordPress.com account
>> Go to the settings tab present in left side of panel
>> Click on “Delete Blog” option available over there
>> Check the confirmation box to delete the blog, Since the deletion will be permanent and the same domain name can’t be taken again. It is not a free domain procedure.
>> Click on “Delete my blog permanently” button at the bottom.
You are done. Now your WordPress.com blog will be deleted and that will not to available to anyone. This deletion process is useful when you have transferred the blog to self hosted blogging platform like WordPress.org. You can go thru the list of best web hosting accounts for self hosted blogs. Your WordPress.com account will not be deleted and you can register another blog domain on the same account for further blogging.