panfrost: Kill panfrost-job.h
What does this MR do and why?
Not only the file name no longer matches its content, but the definitions themselves are either redundant or could be moved to a more suitable place. Since !32720 started turning implicit panfrost-job.h inclusions done in the packer headers into explicit ones, I think it's time to finally do a cleanup that should have been done a long time ago.
Based on !32415 (merged) because it introduces a few more mali_ptr, and I'd expect this MR to be merged after !32415 (merged).
/cc @marysaka