Avoid default Unity "Default-568h@2x.png" creation?

Is it possible to have Unity 3.5.6 to NOT generate a default iPhone 5 splash image? My application is not ready for the full iPhone 5 resolution, but the generated XCode assumes that you want to distribute for full iPhone 5 resolution. I know I can delete the "Default-568h@2x.png" file and clean up the XCode project to remove references to the iPhone 5 splash image as a manual workaround.

However, I have an fully automated build system and rather NOT have another process to clean up XCode (which is not easy). We are doing numerous builds a day. Why would Unity assume that everybody is ready to move onto full iPhone 5 resolution?

Seems like it should be defaulted off, then turned on by the user.