GitLab

I'm now consistently only using 'dpranke@google.com', so there
shouldn't be any need for the other address.

Change-Id: I7576a8bf318cc9455862ea8ef48960e0e6abf641
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2336508Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Dirk Pranke <dpranke@google.com>
Cr-Commit-Position: refs/heads/master@{#794690}