xfree86: remove dead input drivers from xorg.conf man page.

These drivers have been deactivated for over a year now, let's not refer
potential users to them.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

hw/xfree86/doc/man/xorg.conf.man.pre

@@ -2405,25 +2405,16 @@ Display drivers:
 .PP
 Input drivers:
 .BR acecad (__drivermansuffix__),
-.BR calcomp (__drivermansuffix__),
 .BR citron (__drivermansuffix__),
-.BR dmc (__drivermansuffix__),
-.BR dynapro (__drivermansuffix__),
 .BR elographics (__drivermansuffix__),
 .BR evdev (__drivermansuffix__),
 .BR fpit (__drivermansuffix__),
-.BR js_x (__drivermansuffix__),
 .BR joystick (__drivermansuffix__),
 .BR kbd (__drivermansuffix__),
-.BR magictouch (__drivermansuffix__),
-.BR microtouch (__drivermansuffix__),
 .BR mousedrv (__drivermansuffix__),
 .BR mutouch (__drivermansuffix__),
-.BR palmax (__drivermansuffix__),
 .BR penmount (__drivermansuffix__),
 .BR synaptics (__drivermansuffix__),
-.BR tek4957 (__drivermansuffix__),
-.BR ur98 (__drivermansuffix__),
 .BR vmmouse (__drivermansuffix__),
 .BR void (__drivermansuffix__),
 .BR wacom (__drivermansuffix__).