arm64/asm: Remove unused assembler DAIF save/restore macros

There are no longer any users of the assembler macros for saving and
restoring DAIF so remove them to prevent further users being added, there
are C equivalents available.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20221123180209.634650-3-broonie@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>

arch/arm64/include/asm/assembler.h

@@ -34,11 +34,6 @@
 	wx\n	.req	w\n
 	.endr
 
-	.macro save_and_disable_daif, flags
-	mrs	\flags, daif
-	msr	daifset, #0xf
-	.endm
-
 	.macro disable_daif
 	msr	daifset, #0xf
 	.endm
@@ -47,10 +42,6 @@
 	msr	daifclr, #0xf
 	.endm
 
-	.macro	restore_daif, flags:req
-	msr	daif, \flags
-	.endm
-
 /*
  * Save/restore interrupts.
  */