x86: Drop the message about features missing in 64-bit

This functions normally and has done for a while, so drop this scary
message.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/lib/spl.c b/arch/x86/lib/spl.c
index 47cf9c8..0a6a761 100644
--- a/arch/x86/lib/spl.c
+++ b/arch/x86/lib/spl.c
@@ -281,7 +281,7 @@
 {
 	int ret;
 
-	printf("Jumping to 64-bit U-Boot: Note many features are missing\n");
+	log_debug("Jumping to 64-bit U-Boot\n");
 	ret = cpu_jump_to_64bit_uboot(spl_image->entry_point);
 	debug("ret=%d\n", ret);
 	hang();