ArmPkg: remove LoadConstantXxx() asm macros

This is ancient cruft that is no longer used, so remove it.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>

ArmPkg/Include/AsmMacroIoLib.inc

@@ -16,16 +16,6 @@
 ;**/
 
 
-  MACRO
-  LoadConstantMacro $Data
-  ldr  r0, =($Data)
-  MEND
-
-  MACRO
-  LoadConstantToRegMacro $Data, $Reg
-  ldr  $Reg, =($Data)
-  MEND
-
   MACRO
   adrll   $Reg, $Symbol
   add     $Reg, pc, #-8