KVM: x86/mmu: Remove unnecessary warnings from restore_acc_track_spte()

The warnings in restore_acc_track_spte() can be removed because the only
caller checks is_access_track_spte(), and is_access_track_spte() checks
!spte_ad_enabled(). In other words, the warning can never be triggered.

No functional change intended.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: David Matlack <dmatlack@google.com>
Message-Id: <20220119230739.2234394-9-dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/mmu/mmu.c

@@ -652,9 +652,6 @@ static u64 restore_acc_track_spte(u64 spte)
 	u64 saved_bits = (spte >> SHADOW_ACC_TRACK_SAVED_BITS_SHIFT)
 			 & SHADOW_ACC_TRACK_SAVED_BITS_MASK;
 
-	WARN_ON_ONCE(spte_ad_enabled(spte));
-	WARN_ON_ONCE(!is_access_track_spte(spte));
-
 	new_spte &= ~shadow_acc_track_mask;
 	new_spte &= ~(SHADOW_ACC_TRACK_SAVED_BITS_MASK <<
 		      SHADOW_ACC_TRACK_SAVED_BITS_SHIFT);