Not currently, sorry.
Currently the Export > Unbranded Ebook has the title and copyright, as you have found. (It removes the Leanpub branding, as places like Amazon have an issue with it.)
You can find this feature for your book here:
We've added this add this to our backlog to discuss, but unfortunately we can't make any promises about when we will get around to discussing it.
In the meantime, you can remove the first two pages either by (a) opening the PDF in Preview (or equivalent), choosing print > Save as PDF and print all but the first two pages, or (b) (presumably) open the file in Acrobat or some PDF-editing program and remove the first two pages.
If you come across this article and you have any other suggestions for how to do this, please post them on our Authors Forum! You can find the forum here: