kvm: x86: Remove stale declaration of kvm_no_apic_vcpu

This variable was renamed to kvm_has_noapic_vcpu in commit
6e4e3b4d ("KVM: Stop using deprecated jump label APIs").
Signed-off-by: Jim Mattson <jmattson@google.com>
Message-Id: <20211021185449.3471763-1-jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/x86.h

@@ -343,8 +343,6 @@ extern bool enable_vmware_backdoor;
 
 extern int pi_inject_timer;
 
-extern struct static_key kvm_no_apic_vcpu;
-
 extern bool report_ignored_msrs;
 
 static inline u64 nsec_to_cycles(struct kvm_vcpu *vcpu, u64 nsec)