MAINTAINERS: drop two usb-serial subdriver entries

Remove the remaining two obsolete usb-serial subdriver entries from
MAINTAINERS, which were missed in the recent purge by commit
f896b796 ("USB: Maintainers change for usb serial drivers").
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Matthias Urlichs <matthias@urlichs.de>

MAINTAINERS

@@ -9410,12 +9410,6 @@ S:	Maintained
 F:	drivers/usb/host/isp116x*
 F:	include/linux/usb/isp116x.h
 
-USB KAWASAKI LSI DRIVER
-M:	Oliver Neukum <oliver@neukum.org>
-L:	linux-usb@vger.kernel.org
-S:	Maintained
-F:	drivers/usb/serial/kl5kusb105.*
-
 USB MASS STORAGE DRIVER
 M:	Matthew Dharm <mdharm-usb@one-eyed-alien.net>
 L:	linux-usb@vger.kernel.org
@@ -9443,12 +9437,6 @@ S:	Maintained
 F:	Documentation/usb/ohci.txt
 F:	drivers/usb/host/ohci*
 
-USB OPTION-CARD DRIVER
-M:	Matthias Urlichs <smurf@smurf.noris.de>
-L:	linux-usb@vger.kernel.org
-S:	Maintained
-F:	drivers/usb/serial/option.c
-
 USB PEGASUS DRIVER
 M:	Petko Manolov <petkan@nucleusys.com>
 L:	linux-usb@vger.kernel.org