[WATCHDOG] MAINTAINERS: remove ZF MACHZ WATCHDOG entry

- maintainer has not been active for years
- maintainer email bounces
- URL no longer exists
- covered by the WATCHDOG DEVICE DRIVERS entry

Signed-off-by: Adrian Bunk <[e-mail]>
Signed-off-by: Wim Van Sebroeck <[e-mail]>

MAINTAINERS

···
 L:	[e-mail] (subscribers-only)
 S:	Maintained
 
-ZF MACHZ WATCHDOG
-P:	Fernando Fuganti
-M:	[e-mail]
-W:	http://cvs.conectiva.com.br/drivers/ZFL-watchdog/
-S:	Maintained
-
 ZR36067 VIDEO FOR LINUX DRIVER
 P:	Ronald Bultje
 M:	[e-mail]