MIPS: Remove RESTORE_ALL_AND_RET

The RESTORE_ALL_AND_RET macro is never used. Remove the dead code.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14411/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/include/asm/stackframe.h

@@ -387,14 +387,6 @@
 		RESTORE_SP
 		.endm
 
-		.macro	RESTORE_ALL_AND_RET
-		RESTORE_TEMP
-		RESTORE_STATIC
-		RESTORE_AT
-		RESTORE_SOME
-		RESTORE_SP_AND_RET
-		.endm
-
 /*
  * Move to kernel mode and disable interrupts.
  * Set cp0 enable bit as sign that we're running on the kernel stack