All these jobs are redundant and a waste of resources: - the containers have already been built & pushed in the merge pipeline - the mesa build variants have already all passed - the driver tests have already all passed None of these jobs are doing anything useful in this pipeline, but it costs a factor of 2x to our infrastructure, so let's remove them. In other words, the only job left in the post-merge pipeline is the `pages` job that deploys the update to the website. Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26451>