Remove gnu-efi CompareGuid fixup

gnu-efi and EDK2 have the same default CompareGuid since ncroxon/gnu-efi@a093fe0
which is included in the version of gnu-efi included with uefi-ntfs post 963f02b

Signed-off-by: Callum Farmer <gmbr3@opensuse.org>

Author: gmbr3

boot.h

@@ -116,17 +116,6 @@
 #define P_ASSERT(f, l, a)   if(!(a)) do { Print(L"*** ASSERT FAILED: %a(%d): %a ***\n", f, l, #a); while(1); } while(0)
 #define V_ASSERT(a)         P_ASSERT(__FILE__, __LINE__, a)
 
-/*
- * EDK2 and gnu-efi's CompareGuid() return opposite values for a match!
- * EDK2 returns boolean TRUE, whereas gnu-efi returns INTN 0, so we
- * define a common boolean macro that follows EDK2 convention always.
- */
-#if defined(_GNU_EFI)
-#define COMPARE_GUID(a, b) (CompareGuid(a, b) == 0)
-#else
-#define COMPARE_GUID CompareGuid
-#endif
-
 /*
  * Secure string length, that asserts if the string is NULL or if
  * the length is larger than a predetermined value (STRING_MAX)

system.c

@@ -28,7 +28,7 @@ static EFI_STATUS GetSystemConfigurationTable(EFI_GUID* TableGuid, VOID** Table)
 	V_ASSERT(Table != NULL);
 
 	for (Index = 0; Index < gST->NumberOfTableEntries; Index++) {
-		if (COMPARE_GUID(TableGuid, &(gST->ConfigurationTable[Index].VendorGuid))) {
+		if (CompareGuid(TableGuid, &(gST->ConfigurationTable[Index].VendorGuid))) {
 			*Table = gST->ConfigurationTable[Index].VendorTable;
 			return EFI_SUCCESS;
 		}