efi_loader: helloworld.c: remove superfluous include

Remove a superfluous include from helloworld.c
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

lib/efi_loader/helloworld.c

@@ -8,7 +8,6 @@
  */
 
 #include <common.h>
-#include <part_efi.h>
 #include <efi_api.h>
 
 efi_status_t EFIAPI efi_main(efi_handle_t handle,