xfree86: Remove unused chipID/Rev from ScrnInfoRec

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
Acked-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>

hw/xfree86/common/xf86str.h

@@ -652,9 +652,6 @@ typedef struct _ScrnInfoRec {
     Bool flipPixels;            /* swap default black/white */
     void *options;
 
-    int chipID;
-    int chipRev;
-
     /* Allow screens to be enabled/disabled individually */
     Bool vtSema;