I already e-filed my return, started the refile process only to find that I didn't actually need to. How do I abort the in progress return? There is no trash can shown.

I received an unexpected form that I thought would cause me to require refiling my return only to find in the process of working through the return that I needn't refile after all. 
I am given only the option to "Continue" with the online version of TurboTax. There is no trash can icon beside the "ReFILE" return.