No (if I understand your question rightly) -- Fedora doesn't have
any
general requirement that all source files in a given package have
license notices, regardless of what the license is.
Sorry, I must have confused it with the lack of a LICENSE file.
I was sure it was mentioned in
https://fedoraproject.org/wiki/Packaging:LicensingGuidelines?rd=Packaging...
, but I could not find it.
Jonny