Update/remove blink/tools OWNERS

Change-Id: Ic2cc5ead2956718281e45d5adf8ce2a29e47dc4b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2401815
Auto-Submit: Quinten Yearsley <qyearsley@chromium.org>
Commit-Queue: Robert Ma <robertma@chromium.org>
Reviewed-by: Robert Ma <robertma@chromium.org>
Cr-Commit-Position: refs/heads/master@{#806170}

third_party/blink/tools/OWNERS

 dpranke@google.com
-jeffcarp@chromium.org
-qyearsley@chromium.org
+rmhasan@google.com
 robertma@chromium.org
-tansell@chromium.org
 tkent@chromium.org
 wangxianzhu@chromium.org