MAINTAINERS: Chrome: Drop Enric Balletbo i Serra

Sending a patch to the chrome people resulted in a message by
Collabora's mailer daemon:

	550 5.1.1 <enric.balletbo@collabora.com>: Recipient address rejected: User unknown in local recipient table (in reply to RCPT TO command)

So remove Eric from all maintainer entries.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Benson Leung <bleung@chromium.org>
Link: https://lore.kernel.org/r/20211021063210.52503-1-u.kleine-koenig@pengutronix.de