KVM: SVM: Drop unused AVIC / kvm_x86_ops declarations

Drop a handful of unused AVIC function declarations whose implementations
were removed during the conversion to optional static calls.

No functional change intended.

Fixes: abb6d479 ("KVM: x86: make several APIC virtualization callbacks optional")
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220614230548.3852141-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/svm/svm.h

@@ -617,12 +617,8 @@ int avic_init_vcpu(struct vcpu_svm *svm);
 void avic_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
 void avic_vcpu_put(struct kvm_vcpu *vcpu);
 void avic_apicv_post_state_restore(struct kvm_vcpu *vcpu);
-void avic_set_virtual_apic_mode(struct kvm_vcpu *vcpu);
 void avic_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu);
 bool avic_check_apicv_inhibit_reasons(enum kvm_apicv_inhibit reason);
-void avic_hwapic_irr_update(struct kvm_vcpu *vcpu, int max_irr);
-void avic_hwapic_isr_update(struct kvm_vcpu *vcpu, int max_isr);
-bool avic_dy_apicv_has_pending_interrupt(struct kvm_vcpu *vcpu);
 int avic_pi_update_irte(struct kvm *kvm, unsigned int host_irq,
 			uint32_t guest_irq, bool set);
 void avic_vcpu_blocking(struct kvm_vcpu *vcpu);