If you want to remove your URL from Bing search engine or index, Information from Webmaster Center of Bing may answer your question.
You can choose one from below followings requirements:
This is a requested for Removed URL from Bing Search (Live Search) index,

just login into Webmaster account and type any of the following request: -Remove my content remove the URL from Bing search inde
It will take between 48 and 72 hours. Or -Cache removal will only remove the cached page but not the actual URL from the index.
When entering your information in the support request form, you’ve two choices for either option: “enter single URLs line by line”, or “use a wildcard after the domain name, such as example.com/* or example.com/directory/*”
Hope this tips solved your problem
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June 11th, 2009
Nice away to remove it i knew it from earlier but thanks dude
July 17th, 2009
look at this
https://support.discoverbing.com/default.aspx?mkt=en-us&productkey=bingcontentremoval&brand=&&ct=eformts&scrx=1