ArmPkg/AsmMacroIoLib: remove unused obsolete MMIO and other asm macros

This removes the various Mmio ASM macros that are not used anywhere in
the code, and removes some variants of LoadConstant... () that are not
used anywhere either.

Note that these MmioXxx() implementations are unrelated to the C versions
defined in MdePkg. These are strictly intended for use in assembler, and
no such uses remain.

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

@@ -16,60 +16,6 @@
 ;**/
 
 
-  MACRO
-  MmioWrite32Macro $Address, $Data
-  ldr  r1, = ($Address)
-  ldr  r0, = ($Data)
-  str  r0, [r1]
-  MEND
-
-  MACRO
-  MmioOr32Macro $Address, $OrData
-  ldr  r1, =($Address)
-  ldr  r2, =($OrData)
-  ldr  r0, [r1]
-  orr  r0, r0, r2
-  str  r0, [r1]
-  MEND
-
-  MACRO
-  MmioAnd32Macro $Address, $AndData
-  ldr  r1, =($Address)
-  ldr  r2, =($AndData)
-  ldr  r0, [r1]
-  and  r0, r0, r2
-  str  r0, [r1]
-  MEND
-
-  MACRO
-  MmioAndThenOr32Macro $Address, $AndData, $OrData
-  ldr  r1, =($Address)
-  ldr  r0, [r1]
-  ldr  r2, =($AndData)
-  and  r0, r0, r2
-  ldr  r2, =($OrData)
-  orr  r0, r0, r2
-  str  r0, [r1]
-  MEND
-
-  MACRO
-  MmioWriteFromReg32Macro $Address, $Reg
-  ldr  r1, =($Address)
-  str  $Reg, [r1]
-  MEND
-
-  MACRO
-  MmioRead32Macro $Address
-  ldr  r1, =($Address)
-  ldr  r0, [r1]
-  MEND
-
-  MACRO
-  MmioReadToReg32Macro $Address, $Reg
-  ldr  r1, =($Address)
-  ldr  $Reg, [r1]
-  MEND
-
   MACRO
   LoadConstantMacro $Data
   ldr  r0, =($Data)