libweave: remove unused member

BUG=b:37434548
TEST=unit tests

Change-Id: I76f6bc78b6b77021dcbf0e0c1f0b729100c50a02
Reviewed-on: https://chromium-review.googlesource.com/1058144
Commit-Ready: Eric Caruso <ejcaruso@chromium.org>
Tested-by: Eric Caruso <ejcaruso@chromium.org>
Reviewed-by: Dan Erat <derat@chromium.org>
1 file changed