Remove unused constant

Change-Id: Ife62ee96608a76f70d7118d6cd2de92d45988708
Reviewed-on: https://weave-review.googlesource.com/1443
Reviewed-by: Vitaly Buka <vitalybuka@google.com>
Reviewed-by: Alex Vakulenko <avakulenko@google.com>
1 file changed