This xor can never change the number of collisions, so it should be safe to remove.

Bug: 
Change-Id: I253c0ece422f66e7cba15b13c041cfb6c8361674
Reviewed-on: https://chromium-review.googlesource.com/809113Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49985}