MAINTAINERS: Drop maintainer for MAX1668 hwmon driver

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

Cc: David George <[e-mail]>
Signed-off-by: Guenter Roeck <[e-mail]>
Acked-by: David George <[e-mail]>
Acked-by: Jean Delvare <[e-mail]>

MAINTAINERS

···
 F:	drivers/video/matrox/matroxfb_*
 F:	include/linux/matroxfb.h
 
-MAX1668 TEMPERATURE SENSOR DRIVER
-M:	"David George" <[e-mail]>
-L:	[e-mail]
-S:	Maintained
-F:	Documentation/hwmon/max1668
-F:	drivers/hwmon/max1668.c
-
 MAX6650 HARDWARE MONITOR AND FAN CONTROLLER DRIVER
 M:	"Hans J. Koch" <[e-mail]>
 L:	[e-mail]