Remove skpbench support from recipes

Also cleans up some dangling references to other job types that no longer
exist (DDLTotal, 9x9, Mskp).

Change-Id: I1e6c0bf91e85fc4f843d76a6f1c8f6b777fd1af3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/864919
Reviewed-by: Eric Boren <borenet@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
90 files changed