Actually, it GOES away, but pops up again for each possible Binding Path you have. Just answer "yes" as many times it asks. If you experiment a lot with Daihinia, consider disabling the Unsigned Driver warning message.

Background:
Contrarily to how it is documented, Windows tries to bind the driver to ALL possible Binding Paths ("adapters") right away upon installing an Intermediate Driver. And there can be MORE Binding Paths than Adapters as seen in the Network Connections folder. Just from curiosity, open up the Network Adapters section in the Device Manager when booted in Safe Mode. Those are the Binding Paths. Even on a vanilla installation of Windows there's quite a number of them. And Windows tries to bind the poor driver to almost each one.

The Control Application takes care of this situation and unbinds the driver from all adapters after installing. Then binds again to the particular adapter when you select the one you want Daihinia to work with.