xorg ddx: move to new input API, remove old keyboard driver

Remove most of the rest of the old keyboard driver.
Move to the new Get{Keyboard,Pointer}Events API, which is mostly
complete at this stage: just missing the proximity events.

hw/xfree86/common/xf86Cursor.c

@@ -78,14 +78,9 @@ static miPointerScreenFuncRec xf86PointerScreenFuncs = {
   xf86CursorOffScreen,
   xf86CrossScreen,
   xf86WarpCursor,
-#ifdef XINPUT
-  xf86eqEnqueue,
-  xf86eqSwitchScreen
-#else
   /* let miPointerInitialize take care of these */
   NULL,
   NULL
-#endif
 };
 
 static xf86ScreenLayoutRec xf86ScreenLayout[MAXSCREENS];