How Delete "other" data from iPhone?

I recently unjailbroke my iPhone 3g because it was lagging too much. After a full restore I went into iTunes and checked my iPhones memory status and saw 1.5gb of "other" data. I am almost 100% certain that most of it are remnants of cydia and the jailbreak but does anyone know how to delete it. Is there any way to use I fun box or diskaid. Help is really appreciated. I'll jailbreak again once I get a new iPhone.
 
The 'other' data will always be there, no matter what you do. It's basically just parts of software, and you can't get rid of it, nor should you try. Hope this helps!
 
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