hv: fix 'Procedure is not called or referenced in code analysed'

MISRA-C requires that each function defined and declared shall be called
or referenced in code analyzed.

In some cases, we would like to keep the non-called functions for code
completeness, such as
vcpu_inject_extint/vcpu_inject_nmi/vcpu_inject_gp/vcpu_inject_pf
/vcpu_inject_ud/vcpu_inject_ac/vcpu_inject_ss.

This pacth removes some functions that are independent and are not
called in our code base.

Tracked-On: #861
Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

hypervisor/include/arch/x86/guest/guest.h

@@ -93,7 +93,6 @@ enum vm_paging_mode {
 /*
  * VM related APIs
  */
-bool vm_lapic_disabled(const struct vm *vm);
 uint64_t vcpumask2pcpumask(struct vm *vm, uint64_t vdmask);
 
 int gva2gpa(struct vcpu *vcpu, uint64_t gva, uint64_t *gpa, uint32_t *err_code);

hypervisor/include/arch/x86/guest/vpic.h

@@ -130,6 +130,5 @@ void vpic_intr_accepted(struct vm *vm, uint32_t vector);
 void vpic_get_irq_trigger(struct vm *vm, uint32_t irq,
 	enum vpic_trigger *trigger);
 uint32_t vpic_pincount(void);
-bool vpic_is_pin_mask(struct acrn_vpic *vpic, uint8_t virt_pin_arg);
 
 #endif	/* _VPIC_H_ */

hypervisor/include/arch/x86/ioapic.h

@@ -22,7 +22,6 @@
 void setup_ioapic_irqs(void);
 
 bool irq_is_gsi(uint32_t irq);
-uint32_t irq_gsi_num(void);
 uint8_t irq_to_pin(uint32_t irq);
 uint32_t pin_to_irq(uint8_t pin);
 void irq_gsi_mask_unmask(uint32_t irq, bool mask);