logmsbot is no more in #wikimedia-tech

defd768 moved logmsbot to wikimedia-tech, it has then been added to the
wikimedia-ops channel with 7cc8d32 but not removed from wikimedia-tech

We want #wikimedia-tech to be a zone free of bots, so lets remove it.
That also cause !log entries to show up twice in server admin log.

Change-Id: I75abf6144d231f7335d025a59e448500d253fe13