efi: Drop device_path from struct efi_priv

This is not used anywhere drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/include/efi.h b/include/efi.h
index cd0bdcc..0cd4b46 100644
--- a/include/efi.h
+++ b/include/efi.h
@@ -402,7 +402,6 @@
 
 struct efi_priv {
 	efi_handle_t parent_image;
-	struct efi_device_path *device_path;
 	struct efi_system_table *sys_table;
 	struct efi_boot_services *boot;
 	struct efi_runtime_services *run;