[specfile] drop python-rpm dependency

[sandrobonazzola]

rpm module is not being used by sos.

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[packit-as-a-service]

Congratulations! One of the builds has completed. 🍾

You can install the built RPMs by following these steps:

• sudo yum install -y dnf-plugins-core on RHEL 8
• sudo dnf install -y dnf-plugins-core on Fedora
• dnf copr enable packit/sosreport-sos-3770
• And now you can install the packages.

Please note that the RPMs should be used only in a testing environment.

[TurboTurtle]

This makes me wonder if there'd be a benefit to using the rpm module in conjunction with the RpmPackageManager abstraction we use, but that requires a much more thorough investigation as it would likely require us to do something similar for dpkg at the least, but that then gives us even more packaging dependencies at the end of that day. Writing that out, sounds like it's not worth it.

Ack.