If we remove the Group: tag from existing packages (assuming 100% accuracy), this would
mean that the only way for a package to have the Group: tag would be to:
a) have a maintainer add it back in
b) accept a new package with the Group: tag present
If we assume option a) to be unlikely, then wouldn't it make more sense to put the
"doesn't have a Group: tag" check in fedora-review, instead of rpmlint?