drm/xe: Remove duplicate RING_MAX_NONPRIV_SLOTS definition

The engine register header wound up with two definitions for
RING_MAX_NONPRIV_SLOTS, likely due to a rebase mistake.  Keep the
definition that's in an appropriate place (i.e., with the
FORCE_TO_NONPRIV register definition) and remove the other.
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20231212215603.2041841-2-matthew.d.roper@intel.comSigned-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/xe/regs/xe_engine_regs.h

@@ -40,7 +40,6 @@
 #define RING_NOPID(base)			XE_REG((base) + 0x94)
 
 #define RING_IMR(base)				XE_REG((base) + 0xa8)
-#define   RING_MAX_NONPRIV_SLOTS  12
 
 #define RING_EIR(base)				XE_REG((base) + 0xb0)
 #define RING_EMR(base)				XE_REG((base) + 0xb4)