EventLog is very old and provides a poor experience. We have supported
ETW for logging for a while, which is much better. We have also
observed an issue where EventLog keeps containerd.exe open, preventing
containerd from being upgraded to a new version. Due to all of this,
it makes sense to remove the old EventLog hook in favor of using ETW
logging on Windows as the primary diagnostic experience.
Signed-off-by: Kevin Parsons <kevpar@microsoft.com>