x86: Don't bother clearing global NVS

The bloblist guarantees that blobs are zeroed so there is no need to do
an additional memset(). Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/cpu/intel_common/acpi.c b/arch/x86/cpu/intel_common/acpi.c
index 4496bbf..6a3456f 100644
--- a/arch/x86/cpu/intel_common/acpi.c
+++ b/arch/x86/cpu/intel_common/acpi.c
@@ -202,7 +202,6 @@
 				   (void **)&gnvs);
 	if (ret)
 		return log_msg_ret("bloblist", ret);
-	memset(gnvs, '\0', sizeof(*gnvs));
 
 	ret = acpi_create_gnvs(gnvs);
 	if (ret)