Revert "ACPI: don't walk tables if ACPI was disabled"

This reverts commit d1857056.

Double commit, noticed by Thomas Gleixner.
Signed-off-by: NAndi Kleen <ak@linux.intel.com>

drivers/acpi/glue.c

@@ -335,9 +335,6 @@ static int __init acpi_rtc_init(void)
 {
 	struct device *dev = get_rtc_dev();
 
-	if (acpi_disabled)
-		return 0;
-
 	if (acpi_disabled)
 		return 0;