remoting: clean up OWNERS

nicholss@chromium.org shows "No longer on Chrome" in Gerrit.

zijiehe@ has left per jamiewalch@

Change-Id: I3d4b5dae03a0e16f6d3322c0994a901039bd7546
Reviewed-on: https://chromium-review.googlesource.com/959563Reviewed-by: Zijie He <zijiehe@chromium.org>
Reviewed-by: Jamie Walch <jamiewalch@chromium.org>
Commit-Queue: Johann Koenig <johannkoenig@google.com>
Cr-Commit-Position: refs/heads/master@{#542629}

remoting/OWNERS

@@ -2,9 +2,7 @@ garykac@chromium.org
 jamiewalch@chromium.org
 joedow@chromium.org
 lambroslambrou@chromium.org
-nicholss@chromium.org
 sergeyu@chromium.org
 yuweih@chromium.org
-zijiehe@chromium.org
 
 # COMPONENT: Services>Chromoting