ACPI / sleep: Drop acpi_suspend() which is not used

The acpi_suspend() function has no callers, so drop it.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>

drivers/acpi/sleep.c

@@ -806,21 +806,6 @@ static void acpi_sleep_hibernate_setup(void)
 static inline void acpi_sleep_hibernate_setup(void) {}
 #endif /* !CONFIG_HIBERNATION */
 
-int acpi_suspend(u32 acpi_state)
-{
-	suspend_state_t states[] = {
-		[1] = PM_SUSPEND_STANDBY,
-		[3] = PM_SUSPEND_MEM,
-		[5] = PM_SUSPEND_MAX
-	};
-
-	if (acpi_state < 6 && states[acpi_state])
-		return pm_suspend(states[acpi_state]);
-	if (acpi_state == 4)
-		return hibernate();
-	return -EINVAL;
-}
-
 static void acpi_power_off_prepare(void)
 {
 	/* Prepare to power off the system */

drivers/acpi/sleep.h

@@ -1,6 +1,4 @@
 
-extern int acpi_suspend(u32 state);
-
 extern void acpi_enable_wakeup_devices(u8 sleep_state);
 extern void acpi_disable_wakeup_devices(u8 sleep_state);