How To Uninstall Bytafont without Cydia, or reinstall cydia?

I jailbroke my iphone 4s, then downloaded Bytafont. Somewhere along the way, cydia was deleted, and now I can't uninstall Bytafont. I was wondering if there was a way I could uninstall Bytafont without cydia, reinstall cydia without using Absinthe, or just get back to the original system font that all iphones have.

By using technique.

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