MAINTAINERS: Remove entries for drivers that got removed

Those two drivers got removed, as gspca replaced both. So,
remove the old entries.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

MAINTAINERS

@@ -7130,14 +7130,6 @@ S:	Maintained
 F:	Documentation/usb/ehci.txt
 F:	drivers/usb/host/ehci*
 
-USB ET61X[12]51 DRIVER
-M:	Luca Risolia <luca.risolia@studio.unibo.it>
-L:	linux-usb@vger.kernel.org
-L:	linux-media@vger.kernel.org
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media.git
-W:	http://www.linux-projects.org
-S:	Maintained
-F:	drivers/media/video/et61x251/
 
 USB GADGET/PERIPHERAL SUBSYSTEM
 M:	Felipe Balbi <balbi@ti.com>
@@ -7345,15 +7337,6 @@ W:	http://www.ideasonboard.org/uvc/
 S:	Maintained
 F:	drivers/media/usb/uvc/
 
-USB W996[87]CF DRIVER
-M:	Luca Risolia <luca.risolia@studio.unibo.it>
-L:	linux-usb@vger.kernel.org
-L:	linux-media@vger.kernel.org
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media.git
-W:	http://www.linux-projects.org
-S:	Maintained
-F:	Documentation/video4linux/w9968cf.txt
-F:	drivers/media/video/w996*
 
 USB WIRELESS RNDIS DRIVER (rndis_wlan)
 M:	Jussi Kivilinna <jussi.kivilinna@mbnet.fi>