fdformat: clear progress message before printing "done"

Before:

    Formatting ... done1

After:

    Formatting ... done

Signed-off-by: Jakub Wilk <jwilk@jwilk.net>

disk-utils/fdformat.c

@@ -65,7 +65,7 @@ static void format_disk(int ctrl, unsigned int track_from, unsigned int track_to
 
 	format_end(ctrl);
 
-	printf(_("done\n"));
+	printf("     \b\b\b\b\b%s", _("done\n"));
 }
 
 static void verify_disk(int ctrl, unsigned int track_from, unsigned int track_to, unsigned int repair)