ACPI: battery: remove dead code

After commit f1d4661abe05d0a2c014166042d15ed8b69ae8f2 this was dead
code.

Spotted by the Coverity checker.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/battery.c

@@ -554,10 +554,6 @@ static ssize_t acpi_battery_write_alarm(struct file *file,
 
 	if (!battery || (count > sizeof(alarm_string) - 1))
 		return -EINVAL;
-	if (result) {
-		result = -ENODEV;
-		goto end;
-	}
 	if (!acpi_battery_present(battery)) {
 		result = -ENODEV;
 		goto end;