KVM: arm64: Drop MDSCR_EL1_DEBUG_MASK

Nothing is using this macro, get rid of it.

Tested-by: James Clark <james.clark@linaro.org>
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20241219224116.3941496-2-oliver.upton@linux.dev
Signed-off-by: Marc Zyngier <maz@kernel.org>

Author: oupton

arch/arm64/kvm/debug.c

@@ -16,11 +16,6 @@
 
 #include "trace.h"
 
-/* These are the bits of MDSCR_EL1 we may manipulate */
-#define MDSCR_EL1_DEBUG_MASK	(DBG_MDSCR_SS | \
-				DBG_MDSCR_KDE | \
-				DBG_MDSCR_MDE)
-
 static DEFINE_PER_CPU(u64, mdcr_el2);
 
 /*