Instead of warning the caller who is disabling OOM killer that the feature isn't available, only warn if they are trying to **enable** OOM killer and it can't be done. Docker-DCO-1.1-Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com> (github: estesp) Upstream-commit: 5a707d94d605fdf2a35d5a7033d1971b49745352 Component: engine