MAINTAINERS: remove
After discussion with Victor, he mentioned that he wanted to rescind
his maintainership a few years ago (due to a change in priorities and
what he's been working on) but wasn't sure what the right process is.
Thanks for your hard work Victor!
Michael Crosby <michael@docker.com> (@crosbymichael)
-Victor Marmol <vmarmol@google.com> (@vmarmol)
Mrunal Patel <mpatel@redhat.com> (@mrunalp)
Daniel, Dao Quang Minh <dqminh89@gmail.com> (@dqminh)
Qiang Huang <h.huangqiang@huawei.com> (@hqhq)
