printServerWarningsLegacy: silence "No oom kill disable support" on cgroup v2
printServerWarningsLegacy: silence "No oom kill disable support" on cgroup v2

The warning should be ignored on cgroup v2 hosts.

Relevant: https://github.com/moby/moby/pull/41894/commits/8086443a449af8ef5c5b0574de8957df7e52f296

Signed-off-by: Akihiro Suda <10ddef0dea2a66ab193b07198faa879adcb213d8@hco.ntt.co.jp>

cpuguy83/cli,thaJeztah/cli,thaJeztah/cli,docker/cli,cpuguy83/cli,docker/cli