There are several ways to remove Typekit from your blog.
<head> of your blog, simply delete this code.
If you’re using WordPress.com, go to your WordPress dashboard, navigate to Appearance > Typekit Fonts, delete the Kit ID, and click “update.”
If you’re using TypePad, go to your Settings page, navigate to Add-Ons > Typekit Fonts, delete the Kit ID, and click “save changes.”
Once you’ve removed Typekit from your blog, Typekit fonts will no longer appear on your site. Your blog will revert to the default fonts specified in your theme.