Ryan Gonzalez authored Dec 09, 2022 and Andre Moreira Magalhaes committed Dec 15, 2022

We don't sign locally at all with the new ostree-push implementation,
so there's no need to specify the key in the GitLab pipeline.

https://phabricator.apertis.org/T8427



Signed-off-by: Ryan Gonzalez <ryan.gonzalez@collabora.com>