Remove myself from owners

R=machenbach@chromium.org, tmrts@chromium.org

Change-Id: Ibdc4a17fbe145e621144815eaa0bda7c492be6f1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1962852
Auto-Submit: Sergiy Belozorov <sergiyb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65428}

COMMON_OWNERS

@@ -27,7 +27,6 @@ mythria@chromium.org
 neis@chromium.org
 petermarshall@chromium.org
 rmcilroy@chromium.org
-sergiyb@chromium.org
 sigurds@chromium.org
 solanes@chromium.org
 szuend@chromium.org

INFRA_OWNERS

 machenbach@chromium.org
-sergiyb@chromium.org
 tmrts@chromium.org