KVM: x86/mmu: fix repeated words in comments

Delete the redundant word 'to'.

Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Link: https://lore.kernel.org/r/20220831125217.12313-1-yuanjilin@cdjrlc.com


Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>