Remove old validation system

www/include/jslibs/jquery-validation/demo/captcha/rand.php

@@ -1,11 +0,0 @@
-<?php
-
-// Create a random string, leaving out 'o' to avoid confusion with '0'
-$char = strtoupper(substr(str_shuffle('abcdefghjkmnpqrstuvwxyz'), 0, 4));
-
-// Concatenate the random string onto the random numbers
-// The font 'Anorexia' doesn't have a character for '8', so the numbers will only go up to 7
-// '0' is left out to avoid confusion with 'O'
-$str = rand(1, 7) . rand(1, 7) . $char;
-
-?>