Windows: Do not sync callbacks when only need locks

Syncing lock operations with callback fetching is unnecessary because
local lock state is not tracked via callbacks.  More importantly it
risks blocking the cm_LockDaemon thread which needs to be able to
renew locks without obstruction.

Reviewed-on: http://gerrit.openafs.org/11415
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit 47ef2e4e514234bb947cdf325634ad0b8ae5d7da)

Change-Id: I15cf2bfa26cbdaaafc616b353e73ab2f48a235f8
Reviewed-on: http://gerrit.openafs.org/11419
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>