KVM: X86/MMU: Remove useless mmu_topup_memory_caches() in kvm_mmu_pte_write()

Since the commit c5e2184d

("KVM: x86/mmu: Remove the defunct
update_pte() paging hook"), kvm_mmu_pte_write() no longer uses the rmap
cache.

So remove mmu_topup_memory_caches() in it.

Cc: Sean Christopherson <seanjc@google.com>
Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
Message-Id: <20220605063417.308311-6-jiangshanlai@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>