KVM: MMU: remove unnecessary remote tlb flush

This remote tlb flush is no necessary since we have synced while
sp is zapped
Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>

arch/x86/kvm/mmu.c

@@ -3040,8 +3040,6 @@ void kvm_mmu_zap_all(struct kvm *kvm)
 
 	kvm_mmu_commit_zap_page(kvm, &invalid_list);
 	spin_unlock(&kvm->mmu_lock);
-
-	kvm_flush_remote_tlbs(kvm);
 }
 
 static int kvm_mmu_remove_some_alloc_mmu_pages(struct kvm *kvm,