input: remove "mode" field from ValuatorClassRec.

We have per-axis mode now. For those bits that still need it (XI 1.x),
assume that the first axis holds the device's mode.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Chase Douglas <chase.douglas@canonical.com>

include/inputstr.h

@@ -240,7 +240,6 @@ typedef struct _ValuatorClassRec {
     AxisInfoPtr 	  axes;
     unsigned short	  numAxes;
     double		  *axisVal; /* always absolute, but device-coord system */
-    CARD8	 	  mode;
     ValuatorAccelerationRec	accelScheme;
 } ValuatorClassRec, *ValuatorClassPtr;