KVM: x86: remove misplaced comment on active_mmu_pages

The 'mmu_page_hash' is used as hash table while 'active_mmu_pages' is a
list. Remove the misplaced comment as it's mostly stating the obvious
anyways.
Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210226061945.1222-1-dongli.zhang@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/include/asm/kvm_host.h

@@ -939,9 +939,6 @@ struct kvm_arch {
 	unsigned int indirect_shadow_pages;
 	u8 mmu_valid_gen;
 	struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
-	/*
-	 * Hash table of struct kvm_mmu_page.
-	 */
 	struct list_head active_mmu_pages;
 	struct list_head zapped_obsolete_pages;
 	struct list_head lpage_disallowed_mmu_pages;