cros_healthd: remove wbbradley from OWNERS.

f in the chat for our brother Will, who has (at least temporarily)
joined infra.

BUG=none
TEST=none

Change-Id: I0e431520cc0eb297d80f5ced134a5cd48b6d5cd1
Signed-off-by: Paul Moy <pmoy@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1721176Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#682313}

chromeos/services/cros_healthd/OWNERS

 pmoy@chromium.org
-wbbradley@chromium.org
 
 # COMPONENT: Enterprise

chromeos/services/cros_healthd/public/cpp/OWNERS

 pmoy@chromium.org
-wbbradley@chromium.org
 
 # COMPONENT: Enterprise