Disable Disc and ROM pipeline stages for the time being
We're still some way out from having these jobs pass - estimated at least 70 MRs until ROMs cross-compile. In the meantime, the main effect of these jobs will be to cause the overall pipeline status to be amber (i.e. passed with warnings) which undermines its usefulness as an at-a-glance indicator of whether the other jobs all passed.
In theory, their job logs could be inspected by human reviewers to check that the MR doesn't make a cross-compile build any worse than it already is, but I'm not sure that this is going to be the case in practice, or whether this overrides the benefit of being able to quickly see that the whole pipeline passes.
So, comment out the lines that generate that part of the YAML for the time being. Reinstate them once the respective cross-compile builds can complete.