kauth: Remove unused lclpw structure from klog

klog assigns into, but never references, the lclpw structure. Just
remove it.

Caught by clang-analyzer

Change-Id: I8e94f97ee3ee6cb15193ad80dd9aef39e6f8490b
Reviewed-on: http://gerrit.openafs.org/9170
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>