Cellular Network Infrastructure

As announced previously, the rpm binary packages for CentOS 8 / AlmaLinux 8 are unmaintained.
There were also binary packages for openSUSE Tumbleweed in the Osmocom OBS, but these had no further testing besides making sure that they build.

sysmocom was still ensuring that the rpm binary packages build from the rpm spec files in our own git repositories. But this
is also significant effort that we would rather spend elsewhere, and so we decided to stop providing rpm builds altogether
and that we will remove the spec files from the git repositories.

A separate set of rpm binary packages and spec files are maintained by Martin Hauke in the openSUSE OBS instance:

• https://build.opensuse.org/project/show/network:telephony (latest stable releases)
• https://build.opensuse.org/project/show/home:mnhauke:osmocom:nightly (similar to the Osmocom nightly repository)