bootctl: removed unused parameter only_auto

Remove the parameter 'only_auto' from the function
boot_entries_augment_from_loader() because each caller set it always to
true.

Signed-off-by: Goffredo Baroncelli <kreijack@inwind.it>

src/boot/bootctl.c

@@ -1603,7 +1603,7 @@ static int verb_list(int argc, char *argv[], void *userdata) {
         else if (r < 0)
                 log_warning_errno(r, "Failed to determine entries reported by boot loader, ignoring: %m");
         else
-                (void) boot_entries_augment_from_loader(&config, efi_entries, true);
+                (void) boot_entries_augment_from_loader(&config, efi_entries);
 
         if (config.n_entries == 0)
                 log_info("No boot loader entries found.");