hv: remove unused MACROs

MISRA-C states that redundant macros reduce the maintainability of code.

In some cases, we would like to keep the current unused macros for code
completeness, such as cpu registers. These macros might be used later.

This patch removes some unused macros that is not critical for code
completeness.

v1 -> v2:
 * Keep TRUSTY_VERSION in trusty.c.
   Yadong will cook another patch which will utilize TRUSTY_VERSION.

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

hypervisor/arch/x86/lapic.c

@@ -6,12 +6,6 @@
 
 #include <hypervisor.h>
 
-/* Rate range 1 to 1000 or 1uSec to 1mSec */
-#define APIC_TIMER_MAX      0xffffffffU
-#define HYPE_PERIOD_MAX     1000
-#define APIC_DIVIDE_BY_ONE  0x0b
-#define PIT_TARGET          0x3FFFU
-
 /* xAPIC/x2APIC Interrupt Command Register (ICR) structure */
 union apic_icr {
 	uint64_t value;

hypervisor/arch/x86/virq.c

@@ -7,7 +7,6 @@
 #include <hypervisor.h>
 
 #define EXCEPTION_ERROR_CODE_VALID  8U
-#define INTERRPUT_QUEUE_BUFF_SIZE   255
 
 #define ACRN_DBG_INTR	6U
 

hypervisor/arch/x86/vtd.c

@@ -22,7 +22,6 @@
  */
 #define IOMMU_INIT_BUS_LIMIT        (0xfU)
 
-#define PAGE_MASK                   (0xFFFUL)
 #define LEVEL_WIDTH 9U
 
 #define ROOT_ENTRY_LOWER_PRESENT_POS        (0U)
@@ -84,8 +83,6 @@ dmar_set_bitslice(uint64_t var, uint64_t mask,
 #define DMAR_MSI_REDIRECTION_CPU         (0 << DMAR_MSI_REDIRECTION_SHIFT)
 #define DMAR_MSI_REDIRECTION_LOWPRI      (1 << DMAR_MSI_REDIRECTION_SHIFT)
 
-#define DMAR_OP_TIMEOUT CYCLES_PER_MS
-
 enum dmar_cirg_type {
 	DMAR_CIRG_RESERVED = 0,
 	DMAR_CIRG_GLOBAL,