mkosi-initrd: remove some unnecessary files from openSUSE initrd

[aafeijoo-suse]

Initial clean-up, please let me know if this is not the way to go. In my tests, this reduces the size from ~100M to ~40M.

[DaanDeMeyer]

We can certainly add more RemoveFiles= but I'd prefer that anything which can be fixed with reasonable effort in packages is fixed there instead.

For example, you're removing /usr/bin/rpm*, but that means something is pulling in rpm as a dependency which really shouldn't be pulling in rpm as a required dependency, so I'd prefer you figure out what is pulling in rpm and fix that spec to make rpm an optional dependency. Same thing for other stuff.

suse-module-tools is another thing that should really be an optional dependency and not pulled in by default. And of course zypper should not be pulled in as a required dependency either. You get the idea.

For locales ideally it's done via a package as well. On Fedora there's glibc-minimal-langpack to only install C.UTF-8 for example.

Aside from those, I'd prefer that we only use RemoveFiles= for stuff that takes up significant space. For example I'm skeptical that /etc/zypp is going to be taking up a lot of space.

[aafeijoo-suse]

Ok, understood.