ACPI / NUMA: remove duplicate NULL check

The argument "header" for acpi_table_print_srat_entry()
is always checked before the function is called, it's
duplicate to check it again, remove it.
Signed-off-by: NHanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: NRobert Richter <rrichter@cavium.com>
Signed-off-by: NDavid Daney <david.daney@cavium.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/numa.c

@@ -125,9 +125,6 @@ EXPORT_SYMBOL(acpi_map_pxm_to_online_node);
 static void __init
 acpi_table_print_srat_entry(struct acpi_subtable_header *header)
 {
-	if (!header)
-		return;
-
 	switch (header->type) {
 	case ACPI_SRAT_TYPE_CPU_AFFINITY:
 		{