KVM: arm64: Drop the requirement for XARRAY_MULTI

Now that we don't use xa_store_range() anymore, drop the added
complexity of XARRAY_MULTI for KVM. It is likely still pulled
in by other bits of the kernel though.
Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240214131827.2856277-12-maz@kernel.orgSigned-off-by: Oliver Upton <oliver.upton@linux.dev>

arch/arm64/kvm/Kconfig

@@ -39,7 +39,6 @@ menuconfig KVM
 	select HAVE_KVM_VCPU_RUN_PID_CHANGE
 	select SCHED_INFO
 	select GUEST_PERF_EVENTS if PERF_EVENTS
-	select XARRAY_MULTI
 	help
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