You deleted a URL redirect under Administration>URL Redirects. When you attempt to go the original URL which had the redirect on it, you notice the redirect is still in place.
Typically, this is the result of browser cache. Once a URL redirect is deleted, we should be able to land on the expected page. Clear your browser cache in order to see the changes of the deleted redirect. Note: We provide links to third-party websites in an effort to help you resolve your issue. We are not responsible for the information on third-party websites and we cannot assist with implementing resolutions from these websites.