David no longer has access to MAX1688 hardware, so drop him from the maintainers
list.

Cc: David George <dgeorgester@gmail.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Acked-by: NDavid George <dgeorgester@gmail.com>
Acked-by: NJean Delvare <khali@linux-fr.org>