Step down as OWNER for bindings/

Step down as OWNER for bindings/. I am moving on to new things and I will
no longer be able to be as active as I was in Blink. It is best to remove
my email from OWNERS files to avoid confusion.

R=haraken@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/496453003

git-svn-id: svn://svn.chromium.org/blink/trunk@180689 bbb929c8-8fbe-4397-9dbb-9b2b20218538