gitlab-runner: drop unmaintained package here

gitlab-runner: drop unmaintained package here

Unfortunately, this package has not been well maintained since 2021,
when Jan left CZ.NIC. Its usage on OpenWrt devices is limited.

It is a very specific package,
and I believe there will not be enough users
 to maintain it, as no one from the community has stepped up to update it.

Running it on a dedicated server makes sense, but on OpenWrt?
Maybe only on x86_64 and aarch64 devices, as they are significantly more powerful.

Signed-off-by: Josef Schlehofer <[email protected]>