xfree86: drop obsolete xf86GetEntityForSbusInfo()

Not used anywhere, neither Xserver nor drivers, so no need to keep it anymore.

According to git history, it had been introduced introduced in 2003 (*1),
but never called (inside the Xserver) - unclear whether it ever had been
actually used somewhere.

*1) 9508a382f8
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>

hw/xfree86/common/xf86sbusBus.c

@@ -567,23 +567,6 @@ xf86GetSbusInfoForEntity(int entityIndex)
     return NULL;
 }
 
-int
-xf86GetEntityForSbusInfo(sbusDevicePtr psdp)
-{
-    int i;
-
-    for (i = 0; i < xf86NumEntities; i++) {
-        EntityPtr p = xf86Entities[i];
-
-        if (p->bus.type != BUS_SBUS)
-            continue;
-
-        if (p->bus.id.sbus.fbNum == psdp->fbNum)
-            return i;
-    }
-    return -1;
-}
-
 void
 xf86SbusUseBuiltinMode(ScrnInfoPtr pScrn, sbusDevicePtr psdp)
 {

hw/xfree86/common/xf86sbusBus.h

@@ -73,7 +73,6 @@ extern _X_EXPORT int xf86MatchSbusInstances(const char *driverName,
                                             int numDevs, DriverPtr drvp,
                                             int **foundEntities);
 extern _X_EXPORT sbusDevicePtr xf86GetSbusInfoForEntity(int entityIndex);
-extern _X_EXPORT int xf86GetEntityForSbusInfo(sbusDevicePtr psdp);
 extern _X_EXPORT void xf86SbusUseBuiltinMode(ScrnInfoPtr pScrn,
                                              sbusDevicePtr psdp);
 extern _X_EXPORT void *xf86MapSbusMem(sbusDevicePtr psdp,