Remove jeremy@ from Mac OWNERS, and use file references.

I'll take over ownership of the Mac sandbox files.

[email protected], [email protected], [email protected]

Review URL: https://codereview.chromium.org/1200263007.

Cr-Commit-Position: refs/heads/master@{#336153}
10 files changed