MAINTAINERS: drop Vincent Sanders from Simtec S3C boards

Vincent Sanders' email bounces with code 550 (user does not exist) so
remove the entry from Simtec S3C24xx boards.

Cc: Simtec Linux Team <linux@simtec.co.uk>
Cc: linux-samsung-soc@vger.kernel.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

MAINTAINERS

@@ -15825,13 +15825,11 @@ F:	drivers/video/fbdev/simplefb.c
 F:	include/linux/platform_data/simplefb.h
 
 SIMTEC EB110ATX (Chalice CATS)
-M:	Vincent Sanders <vince@simtec.co.uk>
 M:	Simtec Linux Team <linux@simtec.co.uk>
 S:	Supported
 W:	http://www.simtec.co.uk/products/EB110ATX/
 
 SIMTEC EB2410ITX (BAST)
-M:	Vincent Sanders <vince@simtec.co.uk>
 M:	Simtec Linux Team <linux@simtec.co.uk>
 S:	Supported
 W:	http://www.simtec.co.uk/products/EB2410ITX/