Comment 8 for bug 1297069

From what I've interpreted reading about the purpose of fallback.efi, you genuinely do not want fallback.efi to exist when you are booting from removable media. Only when booting from the existing disk that you may or may not have moved to another machine.

The portion of the submitted patch that removed the error message is exactly the same thing that ended up upstream.

https://github.com/mjg59/shim/commit/41e18d4334d84cb5f7c7dd044c9afaf24a0a6538