manifest: Drop ostree-grub2 from ppc64le bootloader

[cgwalters]

We temporarily re-added this in 1f399c3019169bf3f72cf512af1f06b8d3f8ba81 But we've long since dropped Anaconda on all architectures.

In particular this bit applies for ppc64le: https://github.com/coreos/coreos-assembler/blob/a73ad29717e9f16e321b9c0b47cb7eeda31ba330/src/create_disk.sh#L314

Note though this is only true for FCOS; for RHCOS we still ship ostree-grub2 because we need to handle 4.1/4.2 bootimages sadly.

[cgwalters]

Immediate motivation for this is I was looking at https://github.com/coreos/bootupd/issues/50

[cgwalters]

Pinged @ravanelli to test this. (That said I may try to look again at multi-arch devenvs)

[cgwalters]

Thanks for testing!

2020-10-15T23:45:26Z cli: Parsing config.ign: unsupported config version

Right hmm, which coreos-assembler are you using? For testing FCOS (and current RHCOS) you want the latest from https://quay.io/repository/coreos-assembler/coreos-assembler

[ravanelli]

@cgwalters I built it directly from the master.