it looks like you have removed the capcha security image and the security question form elements, you also deleted the honeypots hidden form elements, the fax, and the country.
if you remove these elements, you will also need to delete the code that validates them.
make sure to delete the following lines of code:
$WAFV_Errors .= WAValidateLE(((isset($_POST["Security_code"]))?strtolower($_POST["Security_code"]):"") . "",((isset($_SESSION["captcha_1"]))?strtolower($_SESSION["captcha_1"]):"") . "",true,7);
$WAFV_Errors .= WAValidateLE(((isset($_POST["Security_question"]))?strtolower($_POST["Security_question"]):"") . "",((isset($_SESSION["random_answer"]))?strtolower($_SESSION["random_answer"]):"") . "",true,8);
$WAFV_Errors .= WAValidateRX(((isset($_POST["addblock"]))?$_POST["addblock"]:"") . "","/^$/i",false,9);
$WAFV_Errors .= WAValidateRX(((isset($_POST["secondblock"]))?$_POST["secondblock"]:"") . "","/^$/i",false,10);
$WAFV_Errors .= WAValidatePN(((isset($_POST["UserFax"]))?$_POST["UserFax"]:"") . "",false,true,false,14);
$WAFV_Errors .= WAValidateRQ(((isset($_POST["UserCountry"]))?$_POST["UserCountry"]:"") . "",true,19);
if there are other form elements you have removed as well, you will need to finde the lines that validate those elements too.