[elxx]

Was this when you initially got the phone or did you set it up and delete the account later on? Last I tried you can set up the phone and use it with no Google account, but once you add one you can't remove it without resetting to factory defaults.

[aestra]

It came that way from the store. As far as I know though the previous versions of android didn't function without a Google account.

[eonil]

I was forget that factory reset method. That's the only way to delete the last Google account.