If there is no need to explicitly Require a python-abi on FC4+ it doesn't need to be in the template. Unless someone wants to use a template for an earlier FC release. In which case it could be commented out.
From the package's %description: "These tools are designed for Fedora Core 2 and later.". Dropping support for old distro releases has to happen at some point, but that should be done in one sweep through the whole package instead of individual files. In this particular case, dropping the explicit python-abi dependency would mean that if packages based on the spec template are rebuilt for RHEL4, they lack the proper dependency on python. I don't find that desirable, and as far as I know, the explicit dep does no harm anywhere. So as far as I'm concerned, it will stay in the template at least until RHEL5 is out. Feel free to reopen if you disagree.
Reopening, scheduled to happen in rpmdevtools 5.0 for FC5 and later: https://www.redhat.com/archives/fedora-extras-list/2006-July/msg00557.html
Done in 5.0-2