tools/docker/syzbot: remove grub packages
tools/docker/syzbot: remove grub packages

Don't install grub packages, grub is not working inside of containers.
Add psmisc for ps.

google/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller,xairy/syzkaller,xairy/syzkaller