Revert "mm/oom: add oom control check for memcg"

This reverts commit 071a94b4baf498a4c9d334c4022aa5e1bfad0d29.

OOM control is not stable on every platform, read() might be blocked due
to not receiving oom notification from eventfd. revert this patch for
now.

Signed-off-by: Caspar Zhang <caspar@casparzhang.com>
3 files changed