MIPS: Malta: Remove custom halt implementation

The arch code will hang the machine with an infinite loop if the board
doesn't provide an impelementation of halt - let it, rather than
duplicating it.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14280/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/mti-malta/malta-reset.c

@@ -13,11 +13,6 @@
 #include <asm/reboot.h>
 #include <asm/mach-malta/malta-pm.h>
 
-static void mips_machine_halt(void)
-{
-	while (true);
-}
-
 static void mips_machine_power_off(void)
 {
 	mips_pm_suspend(PIIX4_FUNC3IO_PMCNTRL_SUS_TYP_SOFF);
@@ -28,7 +23,6 @@ static void mips_machine_power_off(void)
 
 static int __init mips_reboot_setup(void)
 {
-	_machine_halt = mips_machine_halt;
 	pm_power_off = mips_machine_power_off;
 
 	return 0;