[blink_perf] Remove myself and Emily from OWNERS.

R=tdresser@chromium.org

Change-Id: Ie6066c5f146534d530b3c224d76727e15b6e9726
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2119757Reviewed-by: Timothy Dresser <tdresser@chromium.org>
Commit-Queue: Timothy Dresser <tdresser@chromium.org>
Cr-Commit-Position: refs/heads/master@{#753312}

third_party/blink/perf_tests/OWNERS

 cbiesinger@chromium.org
-eyaich@chromium.org
 haraken@chromium.org
 hayato@chromium.org
 ikilpatrick@chromium.org
 kojii@chromium.org
-crouleau@chromium.org
 
 # Team: benchmarking-dev@chromium.org
 # COMPONENT: Speed>Benchmark